My 3 yo has worked one on the Dora the Explorer site and loved it. I'd like to find him some more - around 6-12 pieces.
My son loves the ones on the Rescue Heroes web site. I think it's Rescueheroes.com
Thanks Arabella - I checked out the site and he will surely enjoy them. We just didn't have time to do any last night.
check pbskids.com. Look under Author. Also I think barneyonline.com has some.
A great free online jigsaw site with loads of puzzles of 6 pieces going up to 247 pieces can be found at www.jigzone.com. You can even have a new one delivered daily in your e-mail inbox if you so choose. My 2 year old loves the animal puzzles!
Here is a link that might be useful: Jigzone
www.jumpstart.com has puzzles, coloring and other stuff.