• get yourself a dashboard. I recommend homepage
• get yourself a video conferencing platform. I recommend mirotalk
• get yourself a type writing web app to improve your typing speed and challenge other people. I recommend monkeytype
• get yourself a family tree and manage all your family members. I recommend gramps web
• get yourself a drawing platform. I recommend excalidraw
• get yourself a recipe platform. I recommend mealie
• get yourself a photo backup solution alike to Google photos. I recommend immich
• get yourself a git repo manager. I recommend gitea
• get yourself a VPN. I recommend wg-easy
• get yourself a platform for IoT management. I recommend home assistant
• get yourself a pw manager. I recommend vaultwarden

You can find many more examples in my public repo with many compose examples:

https://github.com/Haxxnet/Compose-Examples