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.
Hallway Play: 5 Fab Ideas For Playing in the Smallest Space in the House
Hallway House How-To ~ Build a pop up home in your hallways with tension rods. All you need is three (or more) strategically-placed tension rods, and you'd have a morphing house. fun diy gift idea for emmas kids