When it rains, you're really down to one hand when you whip out your umbrella. Then you're left trying to juggle any number of things: cellphone, briefcase, slice of pizza, keys to your battlesuit.
In Japan, however, there's another way. The Umbrella Shoulder Holder is a snake-like tube you can wrap around your arm, with a hole for you to stick your umbrella into. (We're not sure, but it'd be interesting to see how it deals with J-shaped handles.) After that, just secure it to your body and — bam! — no need to hold that umbrella.
Amazon Japan has 'em for around $26 (not including the cost to import).