I was thinking about this overnight for some strange reason.

I envisioned a frieze high up near the architrave such as in Roman or Greek classical architecture style, except of course it would be in spakfilla rather than marble. lol Having the right type of space to do that would be the problem, but I can see it in a lovely conservatory-like space with plants etc.. It could maybe be glazed somehow to make it appear like marble. It would have to be done very well though or would look very tacky is the problem. Oh well, back to real life.