Caleb and I are in love with this Wheatley cosplay. Watch the video to see that it’s not simply a well executed prop with some LEDs inside. All of the moving parts you’ve come to know and love from hours of Portal 2 playing actually work. They have even been designed to be operated with one hand. It really turned out great.
The design sketches for the build are at least as interesting as the finished product. I embedded all of them in the gallery below. Furin’s post about the project includes a set of build photos as well. This all started with a huge hunk of floral foam and took off from there.