Funny you should mention the pennies. In the instructions my DS teacher sent home about the project she wrote on it that pennies do not stick to posterboard. I guess they have had some problems with that one in the past. What we ended up with was not so much creative but thrifty. I have just finished a large 1 1/2 year scrapbooking album project and have a tons of scraps. We decided to use up some of that extra paper and used my circle punches to do 100 different size and color circles.