Some good hashtags to check out on the Fediverse:
#BreadPosting - Things people have baked
#DogsOfMastodon - Pictures of good bois
#Florespondence - Plants and flowers
#SFFBookClub - Discussing sci-fi and fantasy books
#MastoArt - Artists on the Fediverse
#Introduction & #Introductions - New people on here, say hello
#NP & #NowPlaying - Music tracks currently listened to
#Caturday - Pictures of cats on Saturdays
#Sporespondence - Mushrooms and other fungi
#SmallStories & #TootFic & #SmallPoems - Fiction and poetry short enough to fit into a toot
#Mosstodon - Pictures of moss
#BandcampFriday - Interesting artists on Bandcamp
#AmReading - Anything you are reading
#AmWriting - Anything you are writing
#AskMastodon & #AskFediverse - Requesting help or info from people on the Fedi
#VendrediLecture - French language discussion of books on Fridays
#MastoRadio - Italian language discussion of music
#FediTips #MastoTips #Hashtags
@Christian
The android app @Tusky supports following hashtags, and also the Mastodon desktop advanced interface lets you pin tags as a separate column.
You can activate the advanced interface by going to Preferences > Appearance > Enable advanced web interface and then click "Save Changes".