Decorating: Bone picture frame

I bought this exact picture frame from Doe on Haight street a week ago. I think it was a little cheaper than the Anthropologie version and it is even lovelier in person. Constructed out of bone tiles (not sure who/what was used for the bones), it has a very elegant bohemian elegant design. I bought a simple square frame at Ross that is the same size to serve as it’s partner.

Now the challenge is to find a few photos small enough for these frames and to find a place to hang them. I like the idea of putting a big bunch of framed photos in the bathroom, but it would require a lot of nailing on my rental walls. Would it be worth it?