Undecided? Build a Decision Maker
If you know someone who just can't make a fast decision when asked a simple question - the solution to their problem is a decision maker! And you can make a simple and compact version based around an Atmel ATtiny85 microcontroller as described by Instructables member Victor805.
This is a neat and simple project, made even more so by using the Arduino IDE to program the ATtiny - which can be done using an existing Arduino or compatible board. At the press of a button, one of three LEDs will be randomly illuminated for yes, no or another option.
Alternatively - if you're capable of making your own decisions, this project is a great demonstration of how you can use smaller microcontrollers such as they ATtiny85 inside the Arduino environment. Either way - to learn how, visit the project's Instructable page.
And if you're interested in making your own version of this project, Tronixlabs Australia can help you out with the required parts, such as: