pocket XT
Getting back to the ten-year rule, many of the "smart" barcode
scanners used for inventory/warehouse tracking are 8088- or 80286-based and
in fact run MS-DOS (or compatible) from ROMdisk. These have a multi-line
LCD character display and a fairly full keyboard, and will fit in a
really big shirt pocket. I first saw these around 1990/1991 and the ones
I see today are in fact very little different than the ones from 15 years
ago.
Tim.