We have found one company that makes vibrators that already have plugs. We bought one of theirs from Amazon. The plug on this vibrator is a 2.5mm, but Current Pleasures offers an inexpensive 2.5mm to 3.5mm adapter.
So if you like one of the CalExotics products that come with a plug, making the connection to the Centipede pod is easy. In the next post I will discuss adding a plug to a vibrator that does not come with one.