Igloos are cool. What kid hasn't wanted to build an igloo? You can easily build an milk jug igloo in your classroom with some planning, lots of milk jugs and hot glue. This could be a fun winter craft for the kids when it's too cold to go out.
This milk jug reading Igloo was made with 430 milk jugs by It took about 4 ppl and five hours to build. It now resides at Down Town Orlando's public Library. This is such a fun craft to make for a class room/library. Kids absolutely love it.