Always carry three cables!

Some old large format shutters have a bipole sync connection, which is just two posts on the side of the shutter, and if you have a flash (like Norman) that uses an H-type (household) sync, you can use an electric shaver cord as a sync cable. While I'm sure there have been a few strobes, and perhaps a few photographers, blown up by H-sync cables being plugged into household electric sockets, wouldn't it be great if you could just go into any hardware store and get a sync cable? Maybe that's why Weegee always looked so rumpled and unshaven.