Rockets, that brings back a lot of memories. I got started back in the mid 70's in Air Cadets and later became an instructor for these puppys. Man I must have had over hundreds of rockets and only a few are still around with odd repairs to them. I still have in storage over $400. worth of engines back home. If I ever get a good day that has no wind, I'm going to fire off these puppy's.
I built many Estes and Centuri rocket rockets over the years, Saturn 5 (single & multiple engines), Honest John, Mini Bomarc, Cruise Missle, Space Shuttle, SR-71 Blackbird, V2 German rocket, Interceptor (my fav), Space 1999 Eagle Transporter, 6' Mean Machine, Enterprise & Klingon, Colonial Viper, X-15, Mars Lander, X-Wing, Mercury, F-16 Fighter, Buck Rogers Starfighter, various gliders and the Astrocam which uses 100 film. So many to mention...
One of my favorites is theBadminton Birdie rocket
, this really flies... I **** you not! You gotta try it!