I love old stuff, I'm old myself!
We have a bunch of 2100s.
They are mildly IR capable [with fairly long exposure time, though] and solid workhorses that never die.
The “Holy Grail” of the old “accidental” IR capables is the Oly C-2020.
[got 4 or 5 of them]
You can slap on a R72 and easily see what you’re doing.
Even with a 620nm filter, you can still hand hold it if you’re steady.
It kicks ass even though I still use my Fujifilm IS-1 IR dedicated forensics camera a lot.
For “regular” digital, my love is a Sony DSC-R1.
It has the coolest swivel/rotating LCD *ever* and you can use it as a waist-level “viewfinder” camera like the old Rolleis and Hasselblads.
http://www.dpreview.com/reviews/SonyDSCR1/
[no more laying flat on my stomach in cemeteries....yay!]
The Sony F-828 and F-717s had a similar “rotating” lens thing going but you could only use them waist-level in the landscape mode.
http://www.dpreview.com/reviews/sonydscf828/
I don’t use mine that often any more but I’d never part with it.
I did sell my “spare” a few years ago, though.