After chicks hatch from the incubator they need to go right into a brooder. This is essentially a box with a heat lamp and no drafts. They need to stay in some sort of a brooder for a number of weeks.
My goal with this hatching was to keep the chicks inside the house as long as possible, where they will stay warmer and draft-free. It is also easier to socialize them to people because they are on hand to be picked up and snuggled with throughout the day.
Major drawback: the dust! Imagine a dozen sets of wings flapping. Bedding and dander fly everywhere. Not a big deal in a barn, kind of yucky in the house. So with the inspiration from my Auntie Trish we built a better indoor brooder!
We used a 105 quart (99L) Sterilite brand tub measuring about 32″x19″x13″ for $10 at WalMart. Trish cut out most of the lid, screened it then used a blanket to regulate heat (above). My husband cut out a smaller hole a little larger than the heat lamp, added a wooden frame with screening sandwiched between, then added ventilation holes over the rest of the lid (below).
One really big benefit of this brooder is a simple 40-60 watt bulb is enough to reach the required 90° temperature that first week. In the barn I have to use a powerful/costly heat lamp bulb to achieve the same temp.
This brooder is good for six chicks for three weeks, 12-15 chicks for two weeks, and so on. Trish could probably attest to banties being able to be kept in there longer or with greater numbers.
Another option is to use an aquarium/terrarium with a wire lid. I briefly considered using an abandoned 55-gallon aquarium I have in my barn, then I realized how hard it would be to wash it because it is quite heavy. But a smaller one would be manageable. Here is a ten gallon in the photo below. It is small so will only work for a few days.
After a few weeks of pampering then the chicks are better equipped for the barn.