Do you have sandpaper? All you really need is sandpaper, (the 400 grit came with my nail trim package, so think that should work) and little nylon bolts. If you want to add a backing to it like this, you can get plastic canvas that has large holes from a craft store and cut to size.
Here's a pic of mine.
From the outside
From the inside.
Otherwise the stuff you're talking about is available at home improvement stores I believe, but I don't think that would work as well.