Hope someone can point me the right direction – I’m trying to find SQUARE button covers. I can find plenty of round dome, half-dome and flat button covers, but no square ones. I know they exist as I’ve seen them in commercial applications (home dec pillows). I’m trying to make up some boxed edge pillows for my new bedroom, and would love to finish off the pillows by placing a square, custom-covered button in the middle of the pillow, but darned if I can find square button covers! Anyone know where I might find such a thing? Thanks in advance.