A brick works great, perfect height for chicks past a week or so in age.
Otherwise... let them make a mess. The chicks don't care and they're fine drinking it anyhow. I empty it once in the morning and if they kick a bunch of stuff in within an hour, they get to drink around it for the next 23 hours.
Otherwise... let them make a mess. The chicks don't care and they're fine drinking it anyhow. I empty it once in the morning and if they kick a bunch of stuff in within an hour, they get to drink around it for the next 23 hours.