In iOS 8, you can set your home button to toggle your screen brightness level on your iPhone or iPad. This is another secret power of iOS's accessibility options that doesn't require jailbreak.

Microsoft Excel lets you add two types of buttons to a worksheet: option buttons and toggle buttons. Option buttons, also referred to as radio buttons, let you choose one item from a list.

That's really nice flexibility. To establish a connection, simply click the Easy-switch Toggle button (adjacent to the numbers) until the connection number you want is lit, and then press and hold ...