Pegboard hooks - square hole

I needed some more hooks for my pegboard, so I printed up a few.
I thought printing some that can be done quickly without any supports would be convenient.
Should only take a few minutes to print each peg.

PLA should be flexible enough to clip into the holes so the pegs don't jump off the board all the time, but at the same time, they should be easy enough to pull off to move. I'm not sure about the durability, but for a lot of lightweight items, the pegs should last fairly well as long as they're not in direct sunlight.