I marveled at the Roomba robot at the Intel tent, which was controlled by a Kinect and an Android tablet, using ROS robot software. I asked the man in the tent if we could stand my Styrofoam figure on his robot, to make a sculpture essentially controlled by a cell phone:
The Styrofoam figure was milled out by Metalphysic foundry in Tucson, from a 3D body scan by OpenSkan, made at the Tucson Sculpture Festival 2014.
I also talked to the guys in the Mad Fellows hackerspace tent, who showed me a chapter in ProArduino (written by one of their members), which allows one to control physical objects with a cell phone.
The Austin Bike Zoo
was also at the Southwest Maker Fest