Hi all. I just found something interesting at the local Home Depot that some of you may find a use for. It's called 'leveling line'. It's a small (4" long by 1/2" diameter) shrink-wrapped roll of nylon line used for putting up a drop ceiling. It has 450 feet of a thin 'dental-floss'-like line which can be spooled out from the end of the roll without unwrapping the whole thing. I tried to break some of it, just to see how strong it was, and I couldn't break it (by hand anyway - it just started cutting into my skin). It might make a nice addition to a small kit. The SKU number was 225270, and it costs less than 3 bucks.