iSub
It's been a pleasure to have this beautiful, jelly-fish like object on my floor pumping out bass lines. Unfortunately the power supply stopped working in 2003 and, try as I might, I couldn't find a replacement. You can buy an American (110V) power supply, but not a European (220V) power supply. As the connection is a specialised one, there was no hope of using anything else.
After a period of uncertainty (laced with feelings of disappointment and guilt) I decided to buy another iSub, which came with a new power supply. (So shiny and new.) The iSub which has no power now sits on a window ledge where it can attract the attention it deserves.