How many are you getting? How old will they be?
1. A reflector lamp. Get one with a porcelain socket instead of plastic. The plastic can melt. Also, make sure there is a wire protector over the face. Picture here:
http://www.tractorsupply.com/brooder-reflector-with-clamp-3208291
2. A red bulb if possible. We have a 250 watt bulb, which is getting a bit warm. Red helps prevent picking. Iv everything looks red, truly red things won't attract as much attention. You can get smaller bulbs, but remember: depending upon the age, you need to keep them warm. The first week they should be around 95 and drop 5 degrees each week after that.
3. Thermometer... you want to know what the temp is, but really, watching the birds is the best thermometer you have. Make sure they are comfortable. If they pile up under the lamp, it's too cold. If they try to get far away, they are hot. Our brooder is warm on one end and cooler on the other. The babies use every inch. IMPORTANT: test the placement of your lamp to make sure it is not too hot before you put your new fuzzy butts in there. They will die if they get too hot.
4. A brooder. We have a 54 gallon storage bin purchased from Home Depot for about $21. it is approx 21x42 and 20" tall. It is working great for 4 chicks so far.
5. Pine shavings. You'll put in about 1-2" of shavings in the bottom. IMPORTANT: for chicks 1 or 2 days old, just line the bottom with a few layers of paper towels. Then move to the shavings.
6. A chick feeder. Pic here:
http://www.harrisfarmsllc.com/images/products/harris-farms-baby-chick-feeder-with-jar.jpg
7. Chick waterer: The come in about the same size as above, but you can also get a larger one. If you have the larger one and very small chicks, put some stones in the trough to keep your chicks from drowning. Here are some waterers:
http://www.harrisfarmsllc.com/products/poultry-drinkers.php
8. Chick feed. We use the medicated. But make sure it is STARTER FEED. Chick starter is medicated and helps prevent coccidiosis. The starter feed has different levels of nutrients to keep your chick growing at the right pace. You don't want your baby to grow too fast or too slow.
9. A lid... eventually, you will need something to keep the chicks in the brooder if the walls are not high enough. We built one from chicken wire and a couple of 1x2's.
Hopefully, that helps.
GC's DH