To create more shelf space for these unstackable items you can use coated wire racks to add shelving between the shelves to double your shelving space Be careful when storing china items with lids, since these
Tip: if you want to store unstackable stuff / stuff that you won't be using much and you think that it's an eyesore when you leave them around, a piggyback + relevant minisign is a cheap way to store them. I usually store beefalo horns and spider queen hats just because ...