The Rufie straw: a normal straw that changes color when date rape drugs are detected. I could make trillions.
I like it. Bars could buy it and promote that they have it. If the costs were low enough, they would just make it part of their business, if not, they could put it in vending machines and behind the counter.
You have a GPS/route map thingie like GARMIN, maybe download an app that shows the routes to your destination with green routes as free flowing traffic, yellow routes as significantly slower, and red as any routes where traffic is at a stand still. And offer detours before you’re in the traffic jam.
You have an appliance which dosen’t reach the outlet? Pull the outlet to the appliance! Each outlet can pull from the wall attached to a spring-loaded extension cord hidden within the wall. When you pull the plug back out, the cord retracts back into the wall…just like a vaccuum cleaner.
You have car keys with an alarm fob? You ever have the battery die on you and you are unable to lock/unlock (a real problem with some of todays keyless entry systems) or worse yet, can’t turn off a blaring alarm?
Engineer a key and/or fob which recharges the battery everytime you put it in the ignition.