Sure, DIY truck-bed liners can protect your truck-bed interior, but they can also protect lots of other stuff, from industrial machinery to that functional but ugly toolbox you picked up at the flea market. You can also apply bed liner to surfaces that need to be non-slip, like helipads. Regardless of which brand you go with, you’re getting the same basic product: a polyurethane base, usually color-tinted, with recycled tire chunks suspended within. It sticks to nearly anything, even itself, making for easy repairs.
So have any of you found extraordinary uses for this stuff? How has it held up in your truck bed? Tell us about it in the comments.