This months featured idea is the
Clockwork Toothbrush
Dentists recommend that each time we brush our teeth we should do so for
a full three minutes. Simply wind up the Clockwork Toothbrush fully and
after three minutes it will stop. No cables, no electrics, no batteries,
just long lasting, basic and well-proven mechanics. Takes standard
brushes which are widely available. Click the lightbulb icon on the left to see more
ideas.