[ Such an experience would be sure to turn her off forever! But perhaps she'll appreciate the thrill when the time comes, just so long as she doesn't careen her way into someone's trash.

Anyway, ]

Oh, I think I've read of such a thing recently! What was it, "graffiti" ... I think? Well, I suppose the whole wall would count. But that could work.

Short and sweet would be best for a sign. Perhaps: "Commemoration Wall Here."