Had I lived closer to you, I would've offered to help make some for y'all (I'm making one for my cousin - I'm sending her some clay in the mail, she takes the prints, sends it back, and then, I paint, glaze and heat-harden it and send it to her when it's done, but the clay would dry if I sent it to you guys because it'd take too long for it to get there.
). But if you go to a hobby/crafts shop, I'm sure you can find some plaster - or you could buy a water-painting kit and make a painting with paw prints (water paint is easy to get off the paws again, and since it's water based, it's not going to do anything bad to your babies) and frame that. <3 Or you could have a ceramics artist help you out.
Anyway, I painted the prints today!
The paint is going to turn another color when the clay is heat-hardened - the paw prints are going to be black, and the background will turn a bright, light reddish brown. And of course, it'll be glazed, so it's going to be all shiny!
I made two sets of prints, too - one for me and one for my parents. Here they are so far:
Once again, the prints on the right (in both sets) are Molly's and the ones to the left are Shizzy's.