Once in awhile I see a good post about a product/tool and its uses for keeping a studio clean and maintained, or aiding the recording process. However, it's tricky to find them w/o stumbling upon them. So I was wondering, how about a discussion on this? I've invested in gaffer's tape, isopropryl, brass cleaner, an SPL-meter, the usual assortment of household tools, a sautering kit, and a few others. Anyone have any other suggestions for "non-recording"-related items that really should be in every studio? Like a multimeter? Just wanted to see what everyone thought about this.