What is common among your families and friend groups? What are you planning to go with?
For example, even if someone has been together for years, they still can use upgrades because they may have mismatched items or you can always use a second set of sheets or towels. There was also a wedding Instagram post not long ago that said: Look at a wedding registry as a wishlist of things you want that you wouldn’t spend your own money on. Something interesting I read online is someone said “we don’t believe in the idea of registries and we don’t want anything but we plan to use the cash we get on a blender or toaster we do want” so why not let the guests gift you those things in the first place instead of an engraved item they will give and the couple will toss out discretely as their backup gift without any other guidance? In alot of circles, cash is not even on the table as a gift option. On the flip side, there are circles where physical gifts are immediately tossed out and considered taboo, up to the point where some people say they will not allow or accept them. It’s not very often that those circles intermingle.