Some of you may have seen that Chinese amazon/eBay competitor Ali Baba had its IPO this week. Coincidentally, I decided about a month ago to see how good their hardware deals really were. About a month and $30 (including shipping) later, I have 3 of these little pneumatic cylinders and solenoid valves. They seem to work great, and one cylinder alone would have cost me more than $30 at any other vendor I know of. Anyway, the "get cool parts cheap" thing worked out awesome. Any suggestions on what I should DO with these little guys? Once I get the right hose barbs, they should be pretty powerful little actuators...

Video!