They are great for exploration and photography/videography which I’d count as rather useful. More “useless” things are flying it for fun and getting better at controlling it. There is stunt flying and tricks you can do, there is a whole community of enthusiasts who modify (and build) drones and contests you can compete in. “Useless” like any other hobby I guess.

Making art is not about making “good art” (whatever that means anyway). As long as you enjoy making it or it helps in some other way, it is great. Go and make some shitty art! Or good art. Or weird art. Or whatever kind of art it will be, but don’t be stopped by the idea it has to meet some quality standard.