There's this big fat wall sitting in front of my kitchen window (it's probably the same wall you have in front of your toilet window, or someone else can see from his sleeping room window)."My" wall is only a couple of feet away from the kitchen window, but it's far enough so I can't touch it when I lean out of the window (and I wouldn't want to try it as Im living on the fourth floor). Still the wall really looks like I should make some cool use of it. If the wall was made of steel, I could use huge magnets and put my shopping lists up there (just like other people do on their fridge doors). Technically I could always write down the shopping list on a piece of paper, stick it in a beamer and project it against the wall, but that's not really the convenience I'm looking for (also it would constantly use up energy). So what I need is a cool idea how I can use that "other" wall which isn't my property and where I'm not allowed to use screws or nails.
Have you ever been a passanger in a car and wanted to have a sleep. If you take a pillow and lean it against the window it always ends up bunched up and your head ends up hitting the window. I think that if you put plungers on the pillow (so that it would stick to the window) it would help prolong the sliding down of it, meaning that you would get a longer sleep.A very simple idea, not sure of the market though. Reward: long lenghty sleeps
Problem: The "intermittent" wiper setting on my car is often not the right speed. When the rain lets up, it's still too fast and the wiper scrapes. When the rain starts to get harder, it's too slow and I can't see. When I slow up or slow down, the wiper speed doesn't.Solution: Have a small photo sensor sitting inside the window pointing outside, at a place that is covered by the wiper but not in the view of the driver. The photo sensor sends data to a smart processor - that estimates the rain that's hitting the window and adjusts the wiper blade speed. It could "watch" the wiper blade go by to calibrate the settings of a clear, recently wiped window versus the build up of rain drops between wipes.Reward: Want one.
Since you can't add layers of materials inside the glass or run lines of heated metal to heat a wind shield, you must use your inside window defroster. If you had a hot wiper blade that didn't crack your window you could use the cold temperature wiper fluid and then swish it around with heated wiper blades for maximum speed of defrost and then you can turn your defroster to a different setting to heat the inside to help defrost the rest of the windows.
Reward: long lenghty sleeps 
