See here nobody calls them Band aids, we just call them plasters
The Hoover thing is true though. When my mum and her friends get talking about housekeeping they are like 'oh what hoover do you have' with the response 'dyson/whatever' haha
I guess iPod has also become a synonym for mp3 players now.

Typpex (dunno how to spell it) is another

can't think of any more!