Penzey's spice Jar storage/spice rack

Because I cook a lot and make a lot of spice blends, I like to hold onto some empty spice jars to fill as needed.  The problem was that all the empty jars were taking up a lot of shelf space in my cabinet.  I made in order to shrink the footprint of those empty jars on the shelf, while keeping them accessible when I need them.  I chose old penzey's jars as the 2oz and 4oz jars are the same diameter and can share shaker caps and lids.   It has the capacity to store 4 stacks of jars, each stack containing 2x 4oz jars or 4x 2oz jars.  I don't think this is the most efficient way to store spices you intend to use frequently; but if you're like me and hold onto a small stash of empty jars, this is an efficient way to get them out of the way.  

I printed this in PLA with a 20% infil.