I think these ideas are simple, reasonable and feasible.* Not that I would have the first clue how to create them.
1) Bug repellant that actually works and also doesn’t poison your skin or smell bad
2) Nail polish that dries instantly and perfectly and lasts a long time
3) Bright color hair dye that works on any hair without bleach, actually turns out the color they advertise, and lasts (the same brightness) til it grows out
4) The ability to post individual “Texts From Last Night” or Tweets on Pinterest— I would totally get Pinterest if I could use it for this.
5) WordPress, Tumblr, Blogspot and Instagram all get together so you can be friends and comment and follow between all of them
*Of course there are tons of miracle cures and problem solutions that I wish existed. These just seem like they could actually happen.