Whooo hat a trip and garbage/treasure cache :D

Well.. this boss certainly uncommon kink ;)

Those green things are surely not batteries. They are labelled 'timers' and the circuit schematic seems to imply the are used for some kind of relays. So, a controller device for an electric switch to turn things on/off depending on time.

Do you have by any chance some photos of these items? The middle one looks a bit like a electrode holder for welding machine. But the first from the left with "RS" letters? That looks so odd. Labels make it look like some device, but the shape resembles a folder for documents. Weird.

Oh, and that drawer with unlabelled "Maxwell" CD - that's all the secret things for sure, safely kept on inconspicuous media, tossed with keys and metal parts for absolute safe data retention :D