My kids (7 and 4) love to make things out of recycled cardboard, from curious Rube Goldberg-ian contraptions to palaces for stuffed animals. They do wonders with scissors, tape, and magic markers. A friend told us about Makedo, a system of reusable plastic clips and hinges for cardboard construction. We ordered a set and have been having a ball. The sets even come with a plastic saw for cutting the cardboard. It's not as quick as a box cutter or sharp scissors, but sawing itself can be fun, and the point on the saw handle is meant for punching holes for the clips. And yeah, I guess it's safer too. We didn't make the cardboard gorilla at right but I'd like to! We're gonna need a lot more clips though. There are a variety of Makedo kits available but the 65-piece starter kit is only $14 from Amazon, and comes in a sturdy tube. Of course, if you buy it from Amazon, the shipping box is part of the present! "Makedo FreePlay Kit For One"