Fun and uplifting.
Create glasses where the lens shifts all colors and makes them appear more pastel like.
There are many reasons why you would like to smoke less: better health, saving money, inconvenience, etc.
A cigarette holder that can be programmed only to allow you to open it after a certain amount of time (30, 50, 80 minutes) have passed since the last open.
An easy way of keeping track of activities.
An app that can understand your speech in its context. Every time you start or finish something you want to record, or just want to insert an activity you forgot, just dictate it in your own voice.
Lower voice has an effect on others who hear it. It sounds more authoritative and is a great help in sales.
Software that subtly converts your voice to a lower pitch, so when you talk on the phone the other party hears it at a lower pitch.
So you can just drive a screw directly – no need to drill.
Have bricks that have pre-installed plugs built-in. You can have an instrument sensing and showing you where exactly the plugs are in the wall and just drive the screw in and hang the picture or shelve.