Shower Jet Boat

thingiverse

This is a shower jet boat I have done using the shower 1/2" standard hose as a jet engine to move the boat inside the tub. However, You need to hold the hose to prevent the boat from rolling over. Baloon can also be used, however this is more fun and the kids loved it. Update: I have adjusted the thread design and angle for better printing and smooth operation and increased the height a little to stabilize the boat more.