Does anyone know what this is?

[Tequilamockinbird]

My brother has sent me this. Apparently found in a second hand shop. We're intrigued as to what it is.

Any ideas wise MNers?

I just saw that on FB, apparently it’s a a paint tray given to supporters of a disability arts charity. It represents mouth and feet painters

Ah that makes sense. Thank you. I had wondered if it was some kind of disability aid, just couldn't work out what for.