Fantastic Contraption

For any of you who remember The Incredible Machine, this might be of interest to you. The 90's PC game let you set up Rube Goldberg style machines to try to accomplish simple tasks, and featured a whole plethora of tools. This one is Flash based and has fewer options, but still requires you to set up machines and let them run in a physics based world. Lots of fun. I've been able to beat all the levels except level 20, "Unpossible." If you can manage, save your machine and post the link to the comments!