So, I'm all about making something out of nothing and for free. I needed a glass leather slicker but didn't want to pay the $20 and up price.
I had a discontinued sample of 1/2" thick Corian that was already cut to 4" square. I then rounded the corners, and used a 1/4" radius router bit to produce a fully rounded edge. Sanded it down to 220 and wet molded a grip out of 8 oz veg tan leather.
I'd bet one could order a sample from Dupont for free or next to nothing.
Hope this helps,