One of the flashlight arrays we used during the vent had a bunch of battery corrosion in each battery compartment.

I used isoprop and water on long q tips to clean these out in the optics lab. It is now drying on the bench next to the fume hood. See first pic.

Unfortunately I didn't realise the sink hadn't been used in while and turning this on splashed water on some nearvby electtronics, second pic.

The pipes attached to the taps also leak.

I dried off the silver box and the extension block after powering off the extrension block, it was just some water spraying on it so should be fine.