I was lucky enough to find a beautiful book of botanical prints at a yardsale & have used lots of the prints in my home. I also scour second-hand stores for unique frames-usually with pictures I don't care for in them that I remove. I purchased all of the frames pictured (above &below) for $1.50- $3.00 each.
Here are some coral & lobster prints I used for a bathroom-in-progress in my dad's lake house:
I do mostly long-distance decorating since it's in Antioch, Illinois, but when I visit, I try to accessorize as quickly as I can on a serious budget. The prints are a great way to accessorize a lake house since they're so fitting and I only had to make 1 purchase so my dad doesn't gripe about me spending too much on decorating every time I come!
Here's a close-up of a fully opened page. You can see the fold in the center, but I think it sort of adds to the charm. Eventually I plan on matting all of the prints, but that's another project on another trip!