In the bathroom, the existing shower cubicle was converted into a laundry area and a new walk-in shower installed. In keeping with the home’s sensibilities, terrazzo tiles were laid from floor to ceiling.
49 Brilliant Garage Organization Tips, Ideas and DIY Projects - Page 31 of 49 - DIY Crafts. This looks like Bouillon Cube jar lids screwed to the board, so jar part can screw onto the lid. I've also seen done with baby food jars.