Today after clipping some parts out of an Admiral chassis for Christ Rigot, I decided to take on the monumental challenge of cleaning out my "monochrome graveyard" room, where lesser sets get stored until I either part them out or give them a go at restoration. I also keep my early B/W tubes and spare tube testers in that room, among other things. The nicer sets get displayed around the house, and the trashed color sets and spare color tubes go in their own room on the opposite side of the basement.
Anyway, I can whole-heartedly recommend the Edsal 4000 lb "Muscle Rack" at Sam's Club for storing spare chassis, CRTs, etc. I didn't space the racks evenly, but this doesn't seem to matter. I put eight 50 lb boxes of lead on the top three shelves and violently shook the hell out of it to see if it would be too "top heavy" and tip. It didn't. I loaded it up with TVs and CRTs and it's perfectly stable. I may well buy another set.