The photo here is of a remote control, modified so that one particular button is easier to find by both sight and touch - by gluing the other kind of button to it. Besides being cutely "meta-button", this brings up an important point: not all buttons are created equal. Some are way more important than others - mute, pause, and skip forward, for example, are more important than sleep, sound-mode, or close-captioning. A well-designed product will reflect this, making the important buttons easy to find (again, by both sight and touch). But when the design doesn't do that? Apparently it's time to get out the glue and shirt-buttons!
[Lifehacker & Reddit]