My husband was like, "And what are we going to do with 100 milk jugs while we're waiting for spring?" Good point. We have a little overhang where the house meets the patio, and we're storing them under there for now. I think we'll run out of room though, and then I guess we'll just have to keep them on the patio. We haven't filled them to brim so here's to hoping that they won't explode after freezing and thawing!
Update: It's now midwinter, and we have probably fifty gallons of water sitting all over our patio. I bet the neighbors love that. I'll probably get a letter from the HOA telling me that having milk jugs sitting all over my yard is a violation :)
I just ran across this idea today, which goes right along with my milk jug watering can idea :) She takes a lighter, heats up a needle, and pricks holes in the lid of the milk jug. Excellent. I am so doing that this spring!