The Sanwa Supply website has a Paper Museum section with a heap of cute paper folding craft activities.

The full colour pattern files are available for download in PDF format.  You just print them out, cut out all the pieces, then fold and glue.

I thought this paper dogs and kennel pattern was really cute.

The site is in japanese, so navigating is a little difficult at first, but keep at it because there’s something interesting behind every link.