Mr. Funnybones

 

The Spider (Halloween 2020)

 This is a Halloween prop from 2020. When the motion sensor is triggered, it moves its front legs and makes "spider noises" (some of which are actual recordings of wolf spiders.)

Here are some more still images.

The electronics for the spider run off an Arduino. (Plus Adafruit AudioFX board, a motion sensor, and a few relays). 

I see you - Halloween 2019

 

This prop was a lot of fun. A combination of motion sensors, some LEDs and a servo motor let the skull light up and look towards movement. If you walk past, its head will continue to swivel and follow you. I had five of these stationed along our front walk.