Gotta keep an eye out for these, would look real nice if the dats fit.
You can also get the "Peach Crate" style cassette racks, and remove the vertical slats, leaving every fourth one. DATS fit in sideways. Buddy of mine had a carpenter friend make him a dresser sized chest, using these as drawers, pull knobs mounted on front. About 5 foot high, housed about 10 drawers and his entire DAT and cassette collection.
Rick
who's still trying to figure out how to store all his DATS/CD's