Best truck bed investment you've made

[Alan]

I got a tonneau cover two years ago and it's been worth every penny. I should've bought one way sooner. What truck bed accessory or tool has been your best purchase?

 

[Eskimo]

Definitely a bed extender for me

 

[axeslinger]

I've had tonneau covers on my present and previous GM Sierras. The best accessory has been a spray-on bed liner. Current has and previous two had a GM factory spray-on bed liner. Older Sierras have had either a Rhino or Line-X. Can't beat the surface protection and rust prohibitor. Pricey but worth it.