One Print Catapult!

thingiverse

This is a blast to print, ready to fire at a moment's notice as soon as you pop it off the bed. No assembly needed - just hit print and go. Printing with this model is super easy, no supports required. To get the best results, make sure to position it on its side as shown in one of the images. For optimal performance, choose a flexible filament like PETG. While ABS and PLA do work, they will bend after some use, but you can see that in the pictures too. If done correctly, this little device can launch something up to 200-300 times its length! Jelly beans, peanuts, and other small items around the same size work perfectly.