Some of my co-workers brought in candy yesterday. In one of the cubicles there was a candy bowl in Halloween style, even including a fake human hand. I thought that was nicely decorated, and I went to take some sweets from the bowl.
The moment I took a candy, the hand grabbed me and a voice said "Happy Halloween!". It scared me so much!
It turns out there's a light sensor and a small engine in the hand. Most of my colleagues already knew this and everybody thought it was quite amusing.

A scary bowl.

A wig.