Just get the cheap foam cooler from the store, if you don't already have one, they're less than $5. If you have a desk lamp, just cut a hole in the lid of the cooler just the size of the lampshade thingy. The lamp I'm using is a super cheap one from
Walmart, I think it was $5. It's a clip on style lamp, and hte fixture inside is ceramic (safer) and the shade part is metal.
Line the hole with foil around the edges, it'll protect the foam from the lamp heat if there's too much for the foam (mine's been fine) and put a 25 watt bulb in the lamp. No higher watt, they're too hot.
Line the bottom of the cooler with aluminum foil, poke some holes for ventilation using a pencil or something similar, put a jar or cup in with hot water and a clean sponge upright in it to help with humidity, pop the eggs in and voila, cheapie quick incubator.
I made one three weeks ago. I just hatched out ten quail over the last few days, and I just have a pip in one of the chicken eggs in there. It stays very close to 101 degrees, and the humidity, while not always optimum, has been good enough for the birds to hatch just fine.
I made a window in the front of mine using plastic from a picture frame and caulk, but it's not necessary.
Oh, and you'll want a piece of shelf liner or something on top of the foil to help them be able to walk around after they hatch. The foil makes it really easy to clean up after the hatch as well as helping with the heat.
Here's a pic:
And here are some of our quail babies that hatched this weekend in this incubator. Sorry about the pic quality, it's just a cheapie cell phone.
I already have a pip in one of the chicken eggs in there, too, just pipped a few minutes ago!
Good luck, hope you are able to save some of those babies. They should be okay. We had a five hour power outage half an hour after our quail started hatching Thursday night. We still got eight more babies hatched over the next couple of days.