Does anyone know a source for Boppy covers, other than Boppy itself? I'm looking for a neutral/plain design in 100% cotton, nothing designer/glamorous. The ready-made Boppy covers are just too thin for my taste--our original thick denim cover has gotten very ratty, and it seems Boppy no longer makes that pattern anyway.

I would prefer to buy from a WAHM. I know there is a slipcover pattern out there somewhere, but I'm not much with the sewing machine, unfortunately...

TIA!