Replying to Creative Inventions

Alright so for world of business we need to come up with a good or service and then create a business plan of how we're going to go about selling it and all that shit. So far I've come up with; wireless earbud headphones, delivery service for McDonald's, and a delivery service that will deliver right to your dorm 24/7 and all you have to do is send a text (not really too original but my school doesn't have this). But my team doesn't really like any of my ideas so now I'm coming to you NS for some creative, but reasonable inventions.