Undecoratable

Remember to decorate everything decoratable or undecoratable for the reunion.

Source: wiktionary

The second lesson taught by the outdoor theatres is this: the average open-stage background is undecoratable.

Source: wiktionary

Certainly each character, the strangely quiet Aston-fiddling eternally with the electric plug of an old toaster, the crafty Davies—finding endless fault with the roof he is given over his head, and the livelier Mick—planning to “redecorate” the seemingly undecoratable, rubs against the others until each reveals himself to some degree.

Source: wiktionary

Without the box, Mundt said, “the tree was undecoratable.”

Source: wiktionary