I don't like placing stickers on my cars, bags, etc...if TW stickers were nice, I would keep them in my desk drawer where I also keep a lot of surfing stickers.
I would not wear any patches at all unless I'm being sponsored/paid to do so.
TW products like clothes, mugs, bags, etc. with TW logo/design, I would buy if the products are nice and I like them and the price is good. In the past I have bought a whole bunch of TW cotton shirts but I've switched to polyester a long time ago so if TW would sell TW logo poly tennis shirts, I would check them out.