I honestly can't think of anything. I own many "name brand" products but it's usually a pay-once-cry-once situation. It's not like I keep buying more of the same product after I already have one.
For consumables pretty much every product I use is the generic version of some well known one. I'm not paying double the price for something that's 20% better. For example the generic version of my favourite cookies is 95 cents and the name brand is 3.4€. It's not that much better.