what I use my #nextcloud private cloud instance for:
- email (snappymail)
- contacts (synced to android phone)
- notes - daily todo lists, journaling (accessible via phone, web, tablet)
- my projects files (web, mobile app, & synced to 2 computers via desktop clients, sharing)
- calendar (incl. [readonly] subscription to some google calendars where necessary)
- rss reader "news" (via web, via mobile app, even eInk reader/tablet)
- phone photo/vid autouploads
- music collect. (web player, mobile)