Insert money, push button and claim your reward: A bottle of Evian.

WSJ: Weird Vending Machines Around the World

Kick off your shoes, put your feet up, push the button.

FORBES: Why Is TV So Much Work?

Tessler suggested you could change the color of your walls with the push of a button.

FORBES: Printed TV Will Be On Your Living Room In Five Years Says Israeli Nanotech Professor

If your user is scared to push a button for fear of what might happen, that's bad UI design.

ENGADGET: Zune review

This means that, with a Bluetooth-enabled speaker like the ones shown here, playing your music without wires or a docking station couldn't be simpler: Push a button on the speaker, select it when the speaker's name pops up in your gadget's Bluetooth menu and music begins streaming instantly.

WSJ: Bluetooth Speakers: The Untethered Sound System

Push a button, turn a crank, and your plaything played for you.

FORBES: Boy toy

To make selections in some parts of the menu, you simply push your hand forward in the air, like pushing an imaginary button.

FORBES: Amid Tablet, 3-D TV Deluge At CES, Gesture Tech Could Be The Next Big Thing

Your keyboard can be connected to your PC, tablet and smartphone and you can easily switch among them with the push of a button.

ENGADGET: Logitech's K810 keyboard pairs with up to three devices, has a button for switching apps in Windows 8