Gridfinity 1x1x2 for 3 big usb sticks.

I have some old and oddly Chunky usb dongles, they wont fit if they are too close to other usb thingies, so I made this special holder for 3 of them.

The fit for the USB plug is no snug but not loose either. I have one USB plug that is a bit thicker than the others, that one fits but its a bit tight.

No bottom holes for magnets.