Here’s what they carry now. They’re very cheap frames. The smallest was only $1.99 yesterday. Not a bad size for people who want to do small multi-media projects and want a self-contained environment for them.
Measure the width, heigh, and depth of the frame. Don’t fret if the depth is a little off. You’re going to make an insert. For this insert, I used foam core which had been painted on both sides with acrylic medium. After the medium dried, I cut it out, then wrapped each piece in black paper, gluing it down with white glue. I glued the corners together as well. It’s pretty solid; the paper makes the glue take very well.
Here’s the insert frame set into place. Since I bent the flaps back as far as they would go, the frame holds in pretty snugly. Because it’s black, the same color as the frame, you can’t really tell it’s there.
Here’s how you’re going to hold the backing on, since the metal flaps are in the wrong place. Drill tiny pilot holes for your tiny screws. These screws are about 1cm long. If you don’t want to use the metal flange to hang it with, you can also drill tiny holes and screw in loops to use with a wire.
Hope this helps!