I found a pretty nice set of speakers if you already have a pcmcia sound card. They were made by new media back in the days before built in sound. They mount perfectly on the dock and with the sound card in the dock slot all the cables are out of sight.
They are sold by Consumer Depot
Look on the Hot Deals page for Item # NMC03007. At $5.99 plus shipping (very reasonable) they are not a bad deal. I have only dealt with these people this once. They sell refurb, new and surplus. These appear to be brand new surplus, still all sealed in shrink wrap and plastic bags inside. If someone wants I can email a picture of mine mounted. They look quite nice and are easily removable.