It would be useful to have private or publicly unlisted collections. Think in terms of YouTube Playlists that can either be Public, Private, or Unlisted. With unlisted YouTube playlists, you can do target shares of those while not showing them on your own channel. This feature requests allow for hiding of, for example, adult themed collections, while keeping the overall wish list PG. Applying this feature to collections would enable users of Throne to maintain one account, rather than creating multiple accounts to keep various types of wishlists separated.