Balls of mud that shine Dorodango start out as sloppy mud balls but through careful shaping and polishing with dirt and sand, they end up perfectly round and shiny.
Air Command Water Rockets Home A water rocket uses pressurised air to push water out the back of the rocket to produce thrust.
Awesome DIY water rockets with drop-away boosters Single-stage soda bottle rockets over 600 feet using three drop-away booster engines that separate, NASA-style, when their thrust is spent. The boosters have upward-pointing pins that slip into rings on the main rocket, so they simply slip back out upon burnout.
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