You could probably take some of your own photos to make puzzles. Also, you can probably find photos, contact the photographer and ask them for a license. Some will let you do it for free or cheap. I'm not hot shot photographer, but I took a picture of my clematis and posted here:
http://rankexploits.com/musings/2008/fourth-of-july-clematis-haiku/
I later found it on a free wallpaper site. You know what happens if you use that on a puzzle? Nothing. Because I don't care. You know what happens if you contact me, ask me if you can use it? I say: Sure. Go ahead. For your records, you could then ask me to formalize that on a piece of paper. Heck, you could give me $5 if for some reason payment is required. Or, you could 'buy' the photo from me and we could make sure we copyrighted it so you would be safe. (This might be prudent if you are worried I really am just pretending I took the photo.)
People selling books figure out how to license photos and you can too. It's probably no where near the price Getty charges.
http://rankexploits.com/musings/2008/fourth-of-july-clematis-haiku/
I later found it on a free wallpaper site. You know what happens if you use that on a puzzle? Nothing. Because I don't care. You know what happens if you contact me, ask me if you can use it? I say: Sure. Go ahead. For your records, you could then ask me to formalize that on a piece of paper. Heck, you could give me $5 if for some reason payment is required. Or, you could 'buy' the photo from me and we could make sure we copyrighted it so you would be safe. (This might be prudent if you are worried I really am just pretending I took the photo.)
People selling books figure out how to license photos and you can too. It's probably no where near the price Getty charges.