Having fun at home makes a homemade pizza puzzle. The kids first cut pictures of foods from magazines and the glue them onto a round cardboard cut out. She then cuts them into slices for the kids to put back together.
Get the instructions here:
http://www.havingfunathome.com/2011/05/homemade-pizza-puzzle.html
Mr. printables shares a fantastic United States puzzle printable. You can print it out and glue it onto cardboard for longetivity.
Get the template here:
http://www.mrprintables.com/map-of-the-usa-jigsaw-puzzle.html
Hands on as we grow shows how to turn a cardboard box into a puzzle using numbers on one side and the products box front on the other.
Get the instructions here:
http://handsonaswegrow.com/two-for-one-cracker-box-number-puzzles/