A simple, yet entertaining, craft

In my new job, I work in a cubicle which has a corkboard on one wall. I bought some thumbtacks for my board, but plain old white tacks are really dull. I have plans to decorate them in a variety of ways, but to start out I glued a piece of craft foam to one of them. Given the general design of tacks, this arrangement seemed fairly obvious to me.
 

When I made my Pac-Man tack, my brother immediately asked me when I planned to make some cherries to go along with it. I figured I'd get to it eventually. The day after I put up my tacks, though, I arrived at work to discover this on my board:
 

I am impressed by my mystery co-worker.