There are also CF to SD adapters (I've been seeing
them in my trolling on
 eBay today).  There are also the CF form-factor microdrives, but those are
 getting scarce too I suspect. 
    Find a friend with an old iPod and offer to exchange his hard disk for a
CF card. I did it on mine, upgraded to 8GB and I'm looking to upgrade it to
16GB
    (ok. I don't use it. But my daughter loves it :o))