I went to WalMart, auto department and bought a roll of automotive carpet material. They had it in both black and grey. It's like a three foot wide roll of carpet like material. I cut the material down to the size of the bottom of the case and fitted it in, cutting at the creases to smooth it out as much as possible. Then I used a spray adhesive to glue it down. Not the greatest looking, but does the job. It's been in there for a couple of years and hasn't begun to peel. Whole thing cost me about $15.00 and an hour of time.