Teleportation device so could travel abroad without the hassle of airport security and covid testing!
A time machine so I could start Hollywood and the Internet, thus removing it from the hands of grooming gangs.
I would create a pill so that my farts bind to carbon dioxide and then I would put it in everybody's water supply so that together all our farts will solve global warming.
I want to invent something that tells me if what I wear looks good or not. My sense of fashion is horrible lol
Maybe a device that could match and provide excess food at one location with hungry and poor people at another location.