It’s winter. Days are shorter, your mind is wandering, and you need a little robot made out of a toothbrush head and a pager motor. Put down the booze, get a hacksaw, and start building something. The rest of the condo board with thank you now that you’re not yelling at your neighbors through the grating in your attic.
HOW TO – Make a Bristlebot a tiny directional vibrobot made from a toothbrush! [Makezine]
I would have left the toothbrush handle for a poor man’s sonic care.