There is a seller "potomacestore" that lists a number of items in various
condition.
A HP9866A. very nice if you have the HP9830A but no printer!
https://www.ebay.com/itm/401341724680
A weird Tektronix 8 inch drive thing. The drive resembles the Memorex 651
drives, but could something else. But what is it? The photos are not very
good.
https://www.ebay.com/itm/192119338523
A decent looking Tektronix 4112 terminal:
https://www.ebay.com/itm/401325451012
And some other HP, tektronix stuff.