Nothing beats a good ol' cardboard box for a brooder! And if you can't find one big enough just duct-tape 2 or 3 together. When they get dirty, just fold them flat & place wherever you need to block weeds from growing.
Since we're in sunny South Florida I kick my chicks out into the grass during the daytime as soon as I can, at 1-2 weeks of age, as soon as the baby newness wears off, as soon as they lose their original egg-shapes. I have a collection of protective arks I've made from discarded bird and rabbit cages to protect the chicks while they are in the yard. Then I bring them into their brooder boxes at night.
You can also do great things with ventilated wire shelving and make neat frames in which to keep chicks safe.
Since we're in sunny South Florida I kick my chicks out into the grass during the daytime as soon as I can, at 1-2 weeks of age, as soon as the baby newness wears off, as soon as they lose their original egg-shapes. I have a collection of protective arks I've made from discarded bird and rabbit cages to protect the chicks while they are in the yard. Then I bring them into their brooder boxes at night.
You can also do great things with ventilated wire shelving and make neat frames in which to keep chicks safe.