Lemme tell you what I did. If you are interested, I can post pics later. (I'm at work now)
Got two of the plastic bins with lids. Pretty big ones, but I can't remember how many gallons. You could easily fit three or four full grown chickens in one. Of course, the chickens only use them one at a time.
I (meaning my husband) drilled a small hole in the bottom of each bin. I got two five gallon buckets, turned them upside down and drilled a matching hole in the center of the bucket bottom. Using a bolt and nut, we attached the bins to the buckets to keep the bins raised up off the ground.
Positioned the bins up against the chicken run, on the outside. Went inside the chicken run and cut some holes in the weld-wire that corresponded to where the holes in the bins were. But the fence holes were a little smaller. I pushed the excess wire into the inside of the bin to hold the bins in place while I attached them.
Hubby drilled some tiny holes around the hole in the bin so that I could use this thin, flexible galvanized wire that we have to actually kind of sew the bin to the wire on the chicken run.
So now, all I have to do is walk around to the back of the chicken run and lift up the lids and get the eggs without ever going inside. (not that I mind going inside, but it's a lot easier for me if I don't have to.)
I did end up getting some of those shortest length bungy cords with the hooks on each end. I strap one across each lid to keep it from popping off. Even though the lids snap on, it occured to me that a chicken fight on the inside of the bin or something bumping into the outside of the bin migh make one pop off unintentionally.
It's worked out GREAT! The chickens love it. I figure I will have to replace the bins every year or two because they absolutely will deteriorate in the sun. I know from experience that plastic gets brittle as it weathers. But they are not very expensive. I think $8 each.
Cassandra