Basically anything that comes out of Japan.
Sleeping on the train devices:
Keeping your hair out of your noodles:
For when you go to work, but forget your umbrella. But don't worry, your tie doubles up as an umbrella:
So your heels don't get wet in the rain, despite the fact that you're walking through wet streets:
Butter-glue for your toast:
A hat made of disposable cameras so you can take panoramic photos, stick them together, put your head inside them and spin it around. You're basically there again...
Funnel-glasses for putting eyedrops in:
Mop-onesies so your crawling baby can clean your house as they crawl around:
A pocket-tie for keeping stationery and stuff, like scissors. Cause you know, that's perfectly safe:
A giant pocket-knife, but for gardening tools. A shovel, a hoe, a rake, etc.
Fan your noodles instead of blowing on them:
A device that allows you to press ctrl + alt + delete faster. Because using your left hand to press ctrl and alt and your right hand to press delete wastes too much time:
Blow your nose faster with a toilet roll on your head:

Save your rain water and take it with you to save on water:
Shoes that double as a wacking tool, so you can kill bugs in your home without having to get too close:

Cleaning up the bug you just killed, and other tiny things that are on the floor:
For when you forget your lighter but you remembered your cigarette-holding magnifying glass:
A shirt that comes with a mini-shirt, so you can tell your friend where on your back you're itchy. For example, you tell your friend you're itchy at F6 and your friend will scratch F6:

Apply lipstick without a mirror:

An umbrella on your head, because holding one is too difficult:
For when you have poor hearing:
