What's your preferred fender liner material source?

[broncc]

I'm trying to repair/extend my winter car's fender liners to protect against salt and sand better. What is your preferred source for 1/16th plastic or stiff rubber? I looked on McMaster and with shipping (white not black ) LDPE is a lot more money than I'm willing to spend. I didn't see anything good in the roofing section of the local hardware store.

 

[Snoranger]

How about a tractor trailer mud flap?

 

[scotts90ranger]

Depending on what color you want and what you're looking for sometimes you can find thin flexible cutting boards at the dollar stores...