The making of the still air box
It's rather easy, all you need is an appropriate size see-through tote, an empty metal can, something to hold the can with so you don't burn your hands and a stove or something to heat the can up.
My holes are not that well lined-up, but whatever, it gets the job done!
I used a can that contained evaporated milk, held it over the gas stove burner with some tongs, you really don't want to burn your hands. I held it over the flame for about a minute, this stuff heats up pretty quick. You might want to use a slightly bigger can, depending on the size of your hands. I have relatively small hands, a regular food can is good enough.
Then I pressed it down on the side of the tote and the hot can melted a neat hole. Wait for the plastic to cool off before you stick your hand in there! I suppose you can polish the edges a bit with something to make it smoother, or even stick some electrical insulation tape around it to prevent your gloves tearing if the edges are rough.
Next time I think I will get a slightly bigger box, this one was a little uncomfortable to work in.