The other poster is actually right - there are some categories that fit, such as cars. However, from the categories you listed I can't really name anything. I assume companies like Samsung make the things you mentioned, but I'd have to look it up. I certainly can't think of seeing an ad for any of them (except toothbrushes).

There are only a few brands of toothbrushes in supermarkets here. I've seen ads from them, but the reason I know the brands exist is because I've used their toothbrushes or paste. In the store I pick whatever's cheap.