Mouse trap
After nights waking up from a mouse making noise in the kitchen. I suddenly in an act of rage made a mouse trap with the electronics I had lying around.

Later I used this example to introduce students to the world of electronics and programming. 

Catching a mouse with MAx/MSP from Crofty-Systems on Vimeo.

1 Laptop
1 firewire camera
1 Miditron I/O
1 Relay board
1 Solonoid
1 Baking dish

Max/MSP Jitter patch

Main Feats.
-The patch allows a trigger zone to be defined
-writes video when motion is detected.