My wife always has a go at me that after 10 years I still hoover the floor instead of vacuuming. I then recoil with esky and gladwrap. So I started thinking of brand names that we use quite acceptably with the generic product. I'm not looking for names that are just very common (eg McDonalds, Microsoft) but names where we use the brand name but don't really care if we get the brand product or not. Bacardi and coke is a good example. If I ordered a Bacardi & Coke, I'd be annoyed if it was generic white rum that I got, but probably wouldn't mind if it wasn't actually coca-cola.
Here's my list:
hoover - vacuum
esky - plastic box to keep food/drink cool (what is the generic name?)
gladwrap - clingfilm/ clingwrap
coke - cola
velcro - hook and loop fastener
walkman - portable tape/cd player
sellotape - sticky tape
xerox - photocopier
band-aid - plaster
some ones more relevant to this BB
tarmac - bitumen
allen key - hex head wrench
perspex - clear plastic sheet
masonite - hardboard
Any others?