[Wlug] GIMP question

It's not necessarily a Linux-specific question, but I'm creating some maps for the company Halloween party to direct kids to cubicles that have candy. I want to mark those cubicles with jack-o-lanterns. Using the GIMP, how can I use some jack-o-lantern clip-art as a stamp? It might be useful to keep the jack-o-lanterns on a separate layer in the process. -- Thanks! Rich