18mm Rocket Kits

I plan to have a "Rocket Day" with some family to recover from the Covid Quarantine days and designed this rocket kit for the event. There are five nose cones and five fin units that can be mixed and matched in however you see fit resulting in 25 different combinations.

To build one of these rockets you will need:
1 of the Fins
1 of the nose cones
1 of the motor retainers
1 of the motor stops
1 BT-50 body tube
1 BT-20 body tube (cut to 90mm)
1 12" parachute
1 18" (or so) piece of 1/8" elastic.
Modelling clay

You can cut the 24mm body tube to the length you want. The White and red rockets in the photo use 9" of tube while the Purple rocket is using 5.5" of scrap tube I had laying around. The longer the body tube the less weight you will have to add to the nose. The standard length of BT-50 tubes is 18", so using 9" tubes you can build two rockets. And since they come multi-packs of 3-6 tubes, it's really easy to assemble a bunch of kits by cutting tubes to length and