Equal levels of excitement here as I dug out some extra foam board, rules, razors, and hot glue. The spray paint is currently drying on it as I type.
I will say that if you're going to paint it, dollar store foam board may not be the best idea as the spray paint seems to have caused some of the paper to separate from the foam core. I squeezed a little hot glue into it, so I think things will be okay. Certainly okay enough for a dice tower I made in an hour out of scraps.