Iwent to Home Depot and got a piece of oak shelfing, then gave my hubby one of my rulers and had him cut grooves in the shelf (as many as would fit about 1/4" apart). The piece of oak was about 24" long by 8" wide you can get what ever size you want. this one fits on my window sil and holds all my rulers. It is the just like the ones shown at etsy but lots cheaper.