I had someone tell me to hang them on a nail/hook/whatever and separate the blades using plastic coffee lids so they don't bang into each other. Seems to work. There is also a little blade holder you can build. I think the plan was in Shopnotes. Dave
I built a box for my dado set and will do the same for my 10-inch blades (one to store several) as soon as I get time.
You can see the dado box at the link (I hoipe) below. It's easy and protects everything very well, plus you can build-in room to store nuts, washers or anything else you want to keep with them.
I am right in the middle of building a very similar case from scrap. I decided to build two sections to the case, one for the outside blades and shims, and another section with dados to hold the chippers upright. I had planned to put heavy cardboard between the outside blades, but haven't solved the problem of how to hold the outside blades in place; was thinking of notched dowels in the corners and a thick rubber band between them. What have others done to secure the outside blades?