I misread this as AI initially ...
The only art-centric monkey I knew was Koko, the female gorilla.
Here she draws some things:
https://www.youtube.com/watch?v=6iixL0CMOAM
Smartest monkey I ever saw was Kanzi though:
https://www.youtube.com/watch?v=ENKinbfgrkU
I think it is only a question and matter of time before
the prison systems for monkeys may have to be reconsidered
completely. Of course even smarter monkeys than Kanzi
won't reach human brain functions, but they are also very
convincingly extremely clever and can adapt. Numerous videos
where monkeys handle (!) smartphones show this already and
this is just the beginning. Like, in the movie Planet of the
Apes. Just long-term in smaller steps.