How about a donut dispenser. That way you can grab a donut wherever you are.
Realistically though, apple should introduce a global currency for games, similar to facebook so coins earnt in one game can be used elsewhere etc., it would open up a lot of opportunities for developers.
The youtube app that comes with the phone could do with some improvements too, you have to quit it and restart a lot to get it to play videos and the search tools are terrible, it would be great to be able to search videos by length as well and use some of youtubes other standard filters.
The ability for paypass to be added into the hardware of the phone would be awesome too, then you could use your phone as a credit card and throw your wallet away.
Cheers
Ben