Check out this great Pi powered Halloween scarecrow form Chris Osborn:
I thought it would be fun to setup a prop on my porch for Halloween that did more than just sit there. Of course I came up with the idea very late and so this whole thing was cobbled together in just an hour or two. Looking around my house at a ton of the gadgets I had the idea of putting a Jack-o-lantern on the porch that I could control the light in. Searching the internet for scary Halloween sounds caused things to quickly evolve into adding motion sensors, controlling a couple of lights, adding sound, and putting the pumpkin in the lap of a headless scarecrow.
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.