Yo guys,
This is my entry.
This kid's toothbrush monitors brushing pressure, the bottom of the toothbrush will glow red if too much pressure is used. It also glow blue after 2 mins of brushing has expired.

Hope you like it
Modeling: 1 hour 20 mins
Texturing: 1 hour 30 mins
Rendering: 3 minutes
Software: Maya 6
You got real cool concepts coming in. Nice work!