FlexBall (printed with NinjaFlex)

thingiverse

I picked up NinjaFlex filament and started searching for a basic print to give it a try. I stumbled upon this: https://www.thingiverse.com/thing:821858. Unfortunately, the results were pretty unimpressive. Nevertheless, I was drawn to the concept of a small ball that could be squeezed, so I ended up designing my own version instead. This one worked out much better - and my cat seemed to enjoy it too. Keep in mind: The design is relatively compact, so you might want to scale it up to make it bigger. The model shown in the picture was printed at 250% of its original size.