Puddle Jumper Toy
thingiverse
The original theory suggests that launching it could be done by turning the shaft. However, in real-life scenarios, it appears to be unprintable and the propeller proves inefficient. Taking a commenter's advice into account, I've revised this version, which remains untested yet. The key instruction here is to print the 'shaft up' on a makerbot or similar device.
Download Model from thingiverse
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