Drummer Leon Parker would sometimes play whole gigs with just a cymbal.
Pretty daring, but what an amazing way to learn!
If you want to develop your fretting-hand or whatever for that matter, then that seems like the ultimate way to go about it.
More fun than doing exercises!
By limiting yourself in such a way, you give yourself the opportunity to develop things you’d never thought of.
You just need to be willing to take the risk.