I love carving pumpkins!
I once carved out a "Boo" in my pumpkin, and it turned out well (not too creative, but my carving skills aren't great, so I picked something easy, lol)!
I'll look for the picture, though it may be on our old computer that died.
Painting pumpkins is a fun alternative to carving (especially for kids too young to carve).
We've used spray paint, and decorated the faces with candy. We've also done a green "Frankenstein" pumpkin with black yarn for the hair and bolts stuck in the sides of the head.
I'm off to look for pictures...