A myriad assortment of different jigsaw puzzle pieces; large, small, wood, corkbacked, brown, pink, blue, green, etc. etc. etc.

Puzzle pieces are wonderful additions to any art project. They make great index tabs on journals and altered books. If you have Cheryl Stevenson's book "The Art of Handmade Paper and Collage" (and you should) you can see how she uses them as a transition from one colour to the next. Of course, YOU can just stamp the backs of them or paint them or turn them into funky magnets or ....