Might be helpful to f-droid users to know what others are installing so here’s some of mine.
Web & email
social networking apps
- 
Fedilab to browse mastodon, find it’s long press options really convenient for accounts across multiple instances. You can also use it for stuff like friendica but I find that awkward since it’s still using a UI meant for twitter-likes.
 
media/document viewers
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NewPipe to stream youtube.
 - 
AntennaPod to subscribe and listen to podcasts
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VLC, the Swiss army knife of media playback. Can play pretty much any local file and supports streaming(IPTV and the like) via m3u files.
 - 
Librera PRO for epubs, PDF, cbz ect
 
Misc android utils
- 
AnySoftKeyboard virtual keyboard/ime with suggestions
 - 
Aurora Store to update webview
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G-Droid an f-droid client with a UI I like and it supports reviews via a mastodon account.
 - 
KDE Connect for various linux desktop integration things
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Lawnchair is what I use as my home screen app
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Material Files file manager, find it to be more stable than amaze and it can extract several varieties of tar.* files as well as compressing 7z/tar.xz/zip.
 - 
RHVoice tts engine with English and Russian support and TTS Util which I can input text which RHVoice will use
 - 
Termux terminal emulator with packages
 
Games
- 
Shattered Pixel Dungeon fun roguelike with cute graphics.
 - 
Frozen Bubble puzzle bubble like game with multiplayer support.
 
Post made using List My Apps and Markor


Try Metro player
Metro - A music player for Android (Best material design music player for Android) https://f-droid.org/packages/io.github.muntashirakon.Music/