Ring ring ring ring ring ring ring, coffeephone
When I walk into a Starbucks, I should be able to SMS my order (using some sort of predetermined shorthand) to a certain phone number (posted helpfully just below the menu board) and automatically have the cost of the order added onto my wireless bill, then get an SMS notification when the drink is ready for me. This would eliminate waiting in lines to order, fishing for cash or having to dig out a credit card, and standing around near the drink-delivery counter. Plus, I could key in my order a few minutes before arrival, and it would be waiting for me when I got there.
I will sell this idea to Starbucks for the low, low price of US$10,000. If you are a Starbucks representative, please get in touch with me and we will negotiate payment details.