Evers since I saw this great post about deconstructing a placemat I've been on the lookout for one. I finally got lucky at Ross the other day and found a great one for only $2.50!
I was playing around with different things on them. We had some Nashua tape from fixing our air conditioner and I found out this works pretty well to make embossed metal pieces. I just cut a piece of tape and drew on it with a fine tip Sharpie to get thin, colored lines. I tried a sharp pencil for just plain lines and that seemed to work out fine. Then I just cut the size I needed and stuck it on the bead.