Mattress Retaining Clip

thingiverse

I've got one of those super basic bed frames made from square steel and a mattress on top. One problem I face is that when I sit down or move around on the bed, the mattress has a tendency to shift around uncontrollably. I came up with these clips specifically designed to fit snugly over the frame and keep the mattress firmly in place. I attached a couple on each side at the corners of the bed frame. They're tall enough that even when I'm sitting right in the middle of the mattress, the lift at the ends won't budge out of position. They're a bit more robust than necessary, but I wanted something that would last without needing to be replaced anytime soon.