mho, Posted in German this morning, that surely many people are leaving #Mastodon early after signing up because the Web-UI doesn't really look nice.
That's why I would suggest telling every newcomer not only to try out other mobile-apps, but also web-apps like #Elk, #Phanpy, #Trunks and more (see the screenshots). In addition, one could also look at other services in the #Fediverse, I especially like #Calckey.