Finger Fork
Upon first glance, the finger fork seems pretty silly. Think about it, though! There are plenty of people where this could be a helpful gadget. It's also compact enough to bring along with you so you won't need to use disposable forks. This isn't for everybody, though.
Scent Diffuser
Are you obsessed with essential oils? This is an attachment for your phone that lets you take your essential oils everywhere! It's a pretty nifty invention, but don't use it where you probably shouldn't!