This is a thread for you to say what gadget it is that you wish someone would invent. Try to resist the temptation to put "hilarious" adolescent answers like "A robotic supermodel that can suck the chrome off a bumper" etc, or extreme answers like "Clean nuclear power" - just objects, tools, day-to-day items that would make your life easier.
Mine: I wish someone would invent a device that could synchronise MIDI devices to a live drummer. Something that can recognise the position in the song and exactly follow the tempo the drummer is producing.
Lack of planning on your part does not constitute an emergency on mine.