Here's a link to a card which my friend made with fun foam:
Little square fun foam card
And, like I posted there, this is how she did it:
--->Heat piece of fun foam with a heat gun slightly and *immediately* press a rubber stamp into the fun foam. (You could slam the stamp down hard and fast.
)
She then sponged and brayered on some colours from an ink pad (dye ink). She layered them on top of a paint chip.
I haven't tried inking the stamp first...sounds interesting!