A good solid A/B box can be a guitarist’s best friend. JHS makes their’s from a Hammond 1.5 x 3.6 in. metal enclosure with high quality jacks and switch. They also include a dual color red/blue LED to let you know by sight if your using A or B. This is very practical in a live situation.

JHS Pedals Mini A B Box Footswitch Pedal
$47.79