I've been working pretty hard on my classes recently:
3.091 Intro to Solid State Chemistry
8.01 Physics I
18.01 Calculus
21W.732 Intro to Technical Communication

But I've still been fooling around with odds and ends around my room. Here are some new pictures

The chain thing is pretty cool - what happens is as the chain begins to spin around at a good clip it starts making really cool patterns near the bottom. The 1,000 watt light goes on when someone steps on the pad at the entrance to my room - stays on for 2 seconds then goes off for two minutes before it can be actuated again thanks to a nifty timer.