On one of my visits to eBay I noticed one of these for sale, a Mother Ship Nintendo Hand Controller Enhancer:
Now the auction didn't say much about it and it was priced at around the £15 mark so not something I would buy simply out of curiosity. It basically seems to be a bit of plastic that moves against the inserted pad. Have any of you actually owned one of these? If so whats it like? I'm not sure how accurate it would be for playing games but I'd be interested to find out.