Yes. We use a dog dish. Sometimes I just put a pile of it near the coop too. Just about anything works provided it's separate from their feed as those who need it will eat it, those who don't, won't.
Hiya, and welcome to BYC!! :frow
They should be fed chick starter until they are adults, laying/crowing, then transition to layer pellets/crumbles or all flock with a side of oyster shell.
Congrats!!! We love pictures if you have any and care to share!