The first is The Portable Bar. I first learned about it over here. Thanks to the fine folks at JustInCase I am now confident in my ability to hire myself out as a party on wheels. And you know, there is never enough of those.
Here is the thing that really gets me going. Thanks to Random Good Stuff and The Poop Report I have become familiar with the work of Marcel Neundorfer.
The good man has helped to design games you can play at the urinal. This seems like a no brainer to me. If you are going to serve as a traveling bartender than you might as well bring along some games to entertain the guests wherever they may be.