I've got the same problem and your post got me thinking.
I use press seal bags from the supermarket to store drives/screws/covers when a notebook is partially dismantled for any amount of time.
Item No: LR34-100 at
http://www.packagingproducts.com.au/shopping/shopdisplayproducts.asp?page=2 might be an extension of this method worth looking at.
Press Seal Poly Bags Height 305mm x Width 405mm 50um (Pack of 100)
For $26.20/100
For the investment I think I''ll try them, if they prove unsuitable then I'll have plenty of bags to store last night's dinner leftovers.
I noticed some larger ones when I did the search, 380x510mm which might be better but the min qty is 1000 and no price quoted at
http://www.mcphersonpackaging.com.au/industrial.html
Then we can just bag and tag before stacking them in the out/pending rack.
The out/pending rack is a door-less cupboard I had built which is about 1800x1200 (6'x4') with 4x shelves and vertical braces/partitions.
I'm sure IKEA or the local budget kitchen and bathroom renovation place would have an equivalent.
Thanks for triggering the synapses, I should have thought of this ages ago.