"That sounds like a good idea. Whatever I make can be tranfigured whatever size you want it, really, so I'll do some prototypes that are small and we can go from there. Subway tubes and billboards work. They do it in the big cities in the States all the time - just a charm so that the muggles don't really notice it, works just fine."
Dean shrugged, then watched the way Percy seemed to keep going back to the portraits and sketches of Lav. He laughed, and at least Percy realized he was caught.
"Here, mate..." he took the napkin that was lying unused on their table and took out his coloured pencils. About fourty five minutes later, during which Dean couldn't have been disturbed even by a war erupting outside, the napkin transformed. It wasn't the best he could do, of course, it was rushed and not in the best medium, or with his paints, but for napkin art, he thought it turned out alright.