I transport chicks easily and keep them nice and warm. All you need is a small box, a hand full of aired out shavings, and a hot hands.
I use 12x12 boxes I get from USPS.com for free.
The shavings are just something for the chicks to walk on and keeps poo from soaking through the box. I keep a bushel basket of shavings out in the feedshed. This makes sure that they are aired out well. I can't stand the smell of fresh shavings, so I don't like to use them in brooders or chick-boxes. The basket is very well protected from the chickens messing with it:
Basket. In fact I just came it from petting the protector who is hard at work doing her job. She has rolled over a couple times and is covered in shavings now.
The hothands I get at
Walmart when they are going out of season and put on sale. I get the ones for your feet that last 6 hours.
All you do then is cut a few side holes in the box, toss in a handful of shavings, get the hothands warm and drop it in, add the chicks, and close the top. Takes 2 minutes to get the box ready if you have the supplies on hand.
I have used this setup several times. Once the chicks calm down I have even had them start playing in the box. If you have too many chicks it can get too hot in the box, but then all you have to do it open the top.
Matt