Out here 30"+ CRT TVs are about $30 at the thrift. Pretty dang huge though.
I'm not really in the "stockpiling" mindset because I can do most everything pretty well on an LCD (if it comes down to that). There are some applications which absolutely must have a multi-sync CRT though. I try to play all my older systems on a simple CRT TV; high-end stuff (if I can ever find it) is saved for unusual applications.
A lot of the "nice" flatscreens I see have tubes that are pretty gray when off (in addition to being heavy and a waste of precious space). I already have a nice-sized TV that's almost solid black, and use it rarely enough that it should last a long while.
Here's hoping that eventually there'll be something to replace CRTs.