One Vimium feature that I use a lot is the "Vomnibar". As a heavy bookmarks user, it lets me easily search for any existing duplicates before bookmarking a page by just pressing 'b'. If I start the search with "/<Space>", it will show the full path to the bookmark folder too!
Been using Vimium for years, and just learned about searching paths in bookmarks via `/` (hitting `b` or `B`, then `/`). - Thank you very much for sharing.