I bought a case of (I think 1000) sony 3-1/2" floppies a few years ago, 
 I assume these are HD ones (1.44MByte for a silly definition of
 megabyte). What about DD ones (720K on a PC?). I have exactly one machine
 that used HD 3.5" dissk and many that use the DD type. I am finding them
 hard to obtain now...
  along with a few packs of different colored ones.
I also bought a case of 
 5
  1/4 disks too. i'm sure they will still be on
the market after production
 for quite some time. as it is, there are still cassette tapes on retail
 store shelves! 
 Yes, but can you find Elcassettes anywhere? Or Philips N1500 video
 cassettes?
 -tony