As I was putting the parts into my new case the other day I decided not to put in 3 of the 9 drives I had in there originally since 1 was IDE and the other 2 were only 250GB each.
I labeled the two 250's and put them into anti-static bags. The IDE was put into an external USB box so that I could copy the contents to the new 2TB I added into the machine, and then put that into an anti-static bag and stacked it on the other drives.
Currently there are 5 drives on my desk, 4 in my small drawer, 4 in another drawer, and another 4 on a shelf on the side of my TV stand (all 4 are dead, 3 of them are 10K rpm SCSI drives that you could probably cook on, almost burnt my fingers when I touched them after I got them).
I might see if I can my hands on the foam shipping cartons that they use to ship 10 drives so that I can easily store the working ones.