Not too long ago, Odysseus and I spent $20 on a 18" x1000' roll of butcher paper. I found the roll of painters' tape I thought we had (after looking for it for several weeks), and have taped butcher paper to the coffee table top. Then I turned them loose with the crayons.
It's brightly colored, now, and the kids are having an absolute blast, with very little fighting, though I have had to limit them to one crayon each.
I wish I'd found the tape sooner.
3 minutes ago