"Things that don't exist in real life but exist in my head because I want them then some multi billion dollar company will telepathically steal my idea and make millions."
A laser pointer which projected the image of a computer mouse cursor.
Would that not be awesome? For shits and giggles, there should be a button on it which switched it to the 'finger selecting' cursor and possibly the 'loading hourglass'.
Also I just though of stickers which had the 'Like' button from Facebook on them.
Though I hate Facebook, the idea would be to stick them on stuff. Because they're stickers.
Large Googly Eyes.
By large, I mean larger than those pissy small ones for craft and stuff.
If I ever became some sort of vigilante artist like Banksy, instead of spray painting stuff, I'd run around the city at night and stick a pair of eyes onto inanimate objects to make the entire city look like a stupid kids show.