Have you ever thought about an invention that maybe YOU can't make, but it sure would be nice if someone else did?
I wish someone would invent a keyboard that you could easily unlatch and open up, wipe off all the dust, dead skin, muffin crumbs, Mountain Dew, and microbes, and then close it up, nice and easy. You wouldn't have to take out all of the keys, or crack open any warranty-voiding seals, just open, wipe, close.
I'm sure you'd have to make sure there was an effective connection between the physical keys and the corresponding circuits that went across the flat barrier. Undoubtedly that would be a little more tricky than the way most keyboards are made now, but I'm sure there are companies that have cleanliness needs that are more extreme than mine and they could come up with something.
So, you want to invent it? Already know about something just like it? Got a reason why it would never work? Got some suggestions? Got your own "I Wish Someone Would Invent..."? See you in the comments!