Your Mini-Espresso Maker is great for getting your morning coffee fix in while hitting the outdoors. If you're with a large group, though, making coffee-for-one just doesn't sound like the most suitable way to get everyone perked up and ready for the day. You need something like this Coleman Portable Propane Coffeemaker.
Able to make up to ten cups of coffee in a single run, the appliance saves you from the multiple rounds of cooking that's almost always guaranteed with smaller, more portable outdoor coffee machines. If you've got a group of sleepy folks to kick into gear, as with job sites and family camping spots, or are just a plain old caffeine addict on the road, few tools can probably serve you better.
The Coleman Portable Propane Coffeemaker draws fuel from a standard 16.4 oz propane cylinder, which can have it brewing a batch for up to 4.4 hours (an estimated 15 pots). It works as a standalone unit (with no cords, stove or percolator required), cooking a single pot all by its lonesome in just 18 minutes.
Even better, it operates just as mindlessly as the coffeemaker you have at home, complete with a water reservoir that opens from the top, a removable filter basket for easy cleaning and a single button that turns the machine on automatically in one go. Yep, you can rest your brain cells from the moment you get it, all while scoring a whole load of caffeine in a single cooking.
If you don't mind the bulk, the Coleman Portable Propane Coffeemaker should make for an ideal brewing machine. Price is $90.