This is the igloo midway. Note trusty file box to the side.
Here is how it all began. I tried a plastic trashcan and a plastic bucket as a mold. Neither worked nearly as well as the file box. The rectangle! An awesome building unit!
Side view of competed igloo. That is not my buried car, but my car is in exactly the same condition just over one parking space. My lovely designs were made with a spray bottle full of food coloring & water.