Care and Feeding of Vacuum Tubes (Valves)

Do any special precautions need to be taken with storing vacuum tubes? Are these something that can simply be tossed in the attic and forgotten about until needed? I recently got a fair number, and expect to get more at some point in the future. A lot of the ones I got are simply dumped in an old metal tool box. Zane -- | Zane H. Healy | UNIX Systems Administrator | | healyzh at aracnet.com | OpenVMS Enthusiast | | | Photographer | +----------------------------------+----------------------------+ | My flickr Photostream | | http://www.flickr.com/photos/33848088 at N03/ | | My Photography Website | | http://www.zanesphotography.com |