Hi - What a huge variety of stuff you managed to get.
I'd be a bit cautious tho - especially with old test kits and half open bottles. Lots of these chemical based things are stabilised, but the stability doesnt last that long once the bottle has been open. ...I wouldnt trust the test kit from 1982! (or was that just you saying the packaging looked like it was from the dark ages..? if so then it might be okay).
Personally I wouldnt trust anything chemical older than 5 years (unless it has been stored in a cool dark place), and then would only use it with caution. Some chemicals can go nasty after a while.
Good spotting of the albinos and the heater tho. A spare heater is always a great thing to have!