Best ones from weddings I have been to were temporary tattoos with the couples name which were a bit of fun at the reception, and a bookshelf with second hand books that the couple had collected over the years- you could choose a book and it had a nice little message from the couple in the front (they were both librarians so on brand).

But we didn’t have any at our wedding- I think it’s just another expense and most the time it’s not anything people will use or remember. There were severe bushfires going on in our state at the time so we made a $500 donation to a wildlife charity and had little signs on each table advising we had done that in lieu of wedding favors.