The stars of Zootopia are all animals, and SeeedStudio wanted to wear smart ears when she cosplayed as Nick Wilde and Judy Hopps from the animated film. She got the fox and rabbit ears from plush toys (you can probably track down some secondhand stuffed animals at your local thrift shop) and fitted them with electronic modules made of servos and batteries. Watch the above video to see ear construction.
You can get details on the full process with more pictures at Instructables.
Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.