Hobby Organizations

There are numerous national organizations that promote specific hobbies and offer resources and camaraderie to their hobbyist members. We recommend you consider joining an organization that fits your needs. Some of these organizations are listed below.

National Model Railroad Association (NMRA)

The NMRA advances the global scale model railroading community through education, advocacy, standards, and social interaction. 

International Plastic Modelers Society/USA (IPMS/USA)

A 5,000 member, all-volunteer organization dedicated to promoting the modeling hobby while providing a venue for modelers to share their skills in a social setting, along with friendly but spirited competition in the form of local, regional, and national contests and conventions.

National Association of Rocketry (NAR)

The NAR is all about having fun and learning more with and about sport rockets. We are the oldest and largest sport rocketry organization in the world. Since 1957, over 100,000 serious sport rocket modelers have joined the NAR to take advantage of the fun and excitement of organized rocketry.  More info at the NAR website:

North American Model Boating Association International (NAMBA)

NAMBA International is a non-profit association of radio-controlled model boat clubs. Each year, NAMBA holds a week long regatta in a different locale, so that all members may have the opportunity to participate with competitors from all over the country and the world. Information on NAMBA District 20, which includes Colorado, Wyoming and Northern Utah may be found at www.namba-20.com

Academy of Model Aeronautics (AMA)

The world’s largest model aviation association, representing a membership of more than 195,000 from every walk of life, income level and age group.

Tripoli Rocket Association

Tripoli is a non-profit organization dedicated to the advancement and operation of amateur high power rocketry. Our members are drawn from the United States and 22 additional countries across the globe. High Power Rocketry is an educational, safe and exciting hobby enjoyed by thousands world-wide!

Hobby Resources

Hobby Expo Swap

October 12th & 13th
at the Denver Mart

Have some used/pre-owned hobby merchandise you'd like to get off your hands? Download the form and register for the Rocky Mountain Hobby Swap at this year's Hobby-Expo.


The Rocky Mountain Hobby-Expo is about promoting the enjoyment of hobbies. There are many events for hobbyists to attend to learn about their hobbies, find hobby products and enjoy the fellowship of other hobbyists. This page has been created to provide information on consumer events related to hobbies covered by the Rocky Mountain Hobby-Expo.


AMA West Expo


This three-day expo, presented by the Academy of Model Aeronautics, provides a world-class display of the latest and greatest products for the modeling enthusiast and fun activities the whole family can enjoy, including indoor and outdoor flying demonstrations, model rocket and plane build-and-fly stations, as well as interactive displays, static model competitions, guest speakers, outdoor boat pond demos and more! With more than 100 unique exhibitors and expert modelers on hand, the expo will be entertaining for the novice and experienced modeler alike. At this new location and new date, expected attendance is expected to be at least 5,000 people.


National Narrow Gauge Convention


The National Narrow Gauge Convention (NNGC) is a unique gathering of Narrow Minded individuals, not just from our country but all over the world. The NNGC is an annual model railroad event whose location varies by year. The 2019 convention will be held in Sacramento, California September 4th – 7th.


Toledo Show R/C Model Show


North America’s largest and longest running R/C model expo. This three day event showcases all types of R/C models including planes, cars, and boats. Along with the all the exhibitors there is a R/C model competition, speakers, swap shop, and an auction. This event is fun for the whole family.


IPMS/USA National Convention


The largest scale modeling event in the country, sponsored by the International Plastic Modelers Society


National Train Show


Sponsored by the National Model railroad Association, the show features manufacturers, vendors, hands-on demonstrations and 44,000 square feet of modular railroads




Three days of events for rocketry enthusiasts to choose from, with separate tracks focusing on model rocketry, high power rocketry, and real space, sponsored by the National Association of Rocketry.


Highland Masonic Center Hobby Swaps

The 2019 Hobby Swap calendar is as follows:

  • July 21st, 2019  10 am—3 pm  Highlands Masonic Center 3550 Federal Blvd  Denver, CO 80211
  • October 12th—13th, 2019  Saturday 9 am—5pm, Sunday 10 am—4 pm  Swap at the Rocky Mountain Hobby-Expo   
  • December 15th, 2019  10 am—3 pm  Highlands Masonic Center 3550 Federal Blvd  Denver, CO 80211


Our Highland Masonic Center Events are sponsored by local hobby retailers Action Hobbies in Lakewood, Caboose in Lakewood, Colpar’s Hobbytown in Aurora and Lakewood, Hobbytown in Parker and the Hobbytown stores in Westminster, Longmont, Fort Collins and Cheyenne, Wyoming. Please support these stores as they have the product and service you need!


Visit the show to locate that hard to find treasure! Admission is FREE and Parking is FREE. Standard show hours are 10 am to 3 pm. You may purchase an early admission, allowing entrance at 9 am for $10. Please understand that the items for sale are generally used and it is your responsibility to determine whether they operate. Also, as the Hobby Swap is a public show, the Colorado Department of Revenue requires the collection of sales tax.

 Have hobby items collecting dust or estate items you don’t know what to do with? We have three potential solutions for you-

  1. Sign up for table to sell your items- see “Sellers” section below
  2. Bring your items in for no charge appraisals by multiple sellers- contact us in advance by email to arrange this at HobbySwap@Hobby-Expo.com
  3. Bring your items in to place them in a “Silent Auction”. The way this works is you place items in our auction area with a starting price. Interested parties place bids on the items during the day. At 2 pm, we close the auctions and the high bidder pays for the item. We will mail you a check for the item less a 10% fee. If there are no bids, you take the item home. You will need to return to pickup unsold items as we are unable to transport and store them.

Registrations include 8’ tables and one chair per table. 2019 table prices are $20 each, if received 30 days prior to the show date and $30 after that. Table assignment is at the discretion of show management.

 Setup time is 8:30 am to 10 am. Show hours are 10 am—3 pm. Tear down from 3 pm to 4 pm. Early admission        buyers allowed in at 9 am for a $10 fee. There is no smoking on Masonic Center Property.

 The Hobby Swap is a taxable event per Colorado Dept of Revenue regulations. We hold a blanket sales tax license, which allows us to file and pay taxes for all vendors. A tax rate of x% applies to all sales. You need to report your sales and remit sales tax to us at the end of each event.

Each Swap Meet will feature non-buy/sell hobby activities, an opportunity to provide appraisals and a silent auction for  sellers. Buyers are admitted FREE with the exception of early admission buyers allowed in at 9 am for a $10 fee.

The Swap Meets are promoted via Facebook, Web and in-store promotion with our retail store partners. Our web promotion will feature information on vendors and their products. We request vendors supply us with a description of products you will be selling and photos, if possible to aid us in promotion.

Click the button below to download the registration form for Masonic Center Events.