Coda 251 foot pedal
The Coda251 is an unassuming little foot pedal that plugs into your PC, Mac or tablet via USB and can control a multitude of programs so that guitarists can use them while, you know, actually playing guitar.
The first switch selects one of three modes, each of which alters the functions of the other switches. This can include activating player controls in iTunes, GarageBand or YouTube, or scrolling through a piece of sheet music in Acrobat.
Handy; well built.
Brilliant stuff - we'd love to see a more affordable plastic version for bedroom players, though.