Haven't checked the printers yet, but I found plenty of Tandy software and some peripherals so it's certainly possible.
And I got around to checking all the disks last night, and turns out only about 5 of them had any read errors! That's extremely impressive, considering how dirty many of them were and the environment they were in for who knows how many years. Some really good stuff in there - Turbo Pascal, DBase III, MS-DOS 3.x versions, Windows 3.0 (some errors), plenty of games I've never heard of that are actually quite enjoyable, tons of shareware, The Print Master, random letterhead and printing software, Central Point PC Tools v.7, and on and on. Quite happy with it, and several of them I have found almost no record of online.