Yep, I'm a slot girl, too, for the rulers I use the most sitting on my cutting table.
Years ago I bought 2 rings about 6" diameter that snap open where I hang my long, odd shaped rulers. One ring goes over the rod in the closet ,(I sew in a bedroom) and the other will snap open and I insert the odd rulers.
I have a pretty hat box, no lid, where I have other special rulers, Dresden Path, double wedding ring and the patterns and books for those rulers. A while ago MSQC had a great sale on a bundle of templates. These go in the hat box too but they are in a zip lock bag.