Went to EPCOT last Saturday and just lucked into the building that had the build it your self robots. It was a 15 minutes race for the kids with an interactive screen. After the race you went into an area and built a robot out of plastic parts. It was great and we each built one so my son got 3 different ones. It was free (the best part). It's in innovations, not sure if it's east ot west but it's the one near mission to mars
ENJOY
ENJOY