Toothbrush that (kind of) works
Imagine you are in your FabLab or Makerspace till late and decide to stay over for the night. Now you might need a toothbrush and all you have is a 3D printer. The "Toothbrush that (kind of) works" will do for an emergency case like this. And with some improvements from you we maybe never need to buy toothbrushes again. Happy testing.