Canon 3D Papercraft
Cannon offers an insane selection of paper folding print outs for free at their site. Some are great for kids, others will consume adults for hours. There is definitely something for everyone here!
One more fun free printable craft project calendar from Canon. This one is a monkey. We all need more monkey.
Yes, I know it is already May, but I couldn't resist this calendar. From Canon's website, it is ready to print and put together for free. A good project for you and the kids on a rainy spring afternoon? You betcha.