-Used Computer Speakers (with 3.5 mm plugs not wires), that connect to the audio ports on a standard stereo system.
'or'
-A used Small Subwoofer, with a Power Button And a Volume Control, that uses a power cord (and a plug cord that connects to the audio port on a standard stereo system).
$10 Max.
Preferred Shoe Specs (Special circumstances for a mobility-challenged elderly client):