I happened to have some empty milk crates and a bunch of scrap materials so here we go:
I would guess that milk crates are standard size, so I am including my measurements. You may have to adjust if you are using a different crate.
Then I cut 13" x 13" squares from some 3 or 4" foam (this used to be a cushion on said trunk that was taken apart, but lately, the cat has been sleeping on it).
Now repeat the process with a nice sturdy fabric (I cut three squares from the old cushion I mentioned before, and one square that was left over from last week's floor pouf). I cut this fabric a little bigger so I would have plenty to work with to make the corners neat even over the first layer. Once your centers are stapled in place, pull the corner down, staple it, then tuck in and pull while it is held in place with the staples.
Linking up with: Backyard Farming Connection Hop #19
Keep Calm Craft on over at Frontier Dreams
Eat Make Grow Blog Hop - no Buy February at Foy Update
stash bash over at Crunchy Catholic Momma
a new blog hop I found over at Frugal by Choice, Cheap by Necessity
Creative Friday over at Natural Suburbia
The Homeacre Hop over at the Self-sufficient Homeacre
Eco Kids Tuesday at Like Mama Like Daughter