Any suggestions for protecting the rear bumper? My kids use it as a step when climbing into the rear and it gets banged when loading stuff so the paint is beginning to take a beating. Are there any OEM or aftermarket solutions? I'm thinking of something like the stainless steel or chrome sill covers discussed elsewhere on the forum, but in rubber or plastic since metal could get slippery and could or be easily dented. I'm also open to DIY solutions - perhaps something that can be brushed or sprayed on or a peel-and-stick rubber sheet material.