The urge for a good cup of espresso might come at any moment without warning, which is why Instructables user urant decided the best solution would be to build a tiny, pocket sized espresso machine for less than $30.When planning the process, urant decided early on the build would be restricted to parts available at any hardware store, so you'll be able to get everything you need without venturing too far. The bulk of it uses copper plumbing parts, a soldering iron and a syringe. It's an in-depth little project, but by the end of it you'll be able to carry around an espresso machine with you everywhere you go. Everything you need, including blueprints, instructions, and photos, is available on Instructables.
Pocket size Espresso Machine with integrated alcohol stove [Instructables]