A parachute release mechanism with an Arduino Pro Mini by sholtob

Handheld Rocket Launcher!! by kaptaink_cg

A Rocket in your Pocket by Kiteman

Water Rocket launching pad by robertodelle

10 Minute Rocket by (zack)

50 Foot+ Rubber Band Rocket - New & Improved! by yokozuna

Eco Office Rocket: Build a Rocket from Trash by sshuggi

Keychain Rocket CamCorder by bertssat

Bottle Rocket Launcher: The Cheap, Doesn't Get You Wet Ed… by sshuggi

Nyan Cat Rocket by ahrshin

Quick Change Electronic 2 Litre Water Rocket Launcher by d2theyo

Air Cannon v3 by trebuchet03

Improved Pyrotechnics Powder Management by Kryptonite

compressed air rockets by mikeasaurus

Paper Rocket with Launcher by KelliShaver

Make a Vacuum-cleaner Bazooka by ynze

Mercury Joe: Semi-scale flying GI Joe Redstone Rocket by JamieClay