I have looked for the low-cost computing environment for long enough to have found a collection that might fill in some gaps for someone else. The free and open source software community has created some valuable software and it improves every day so searching for those improvements is valuable and worth sharing.
Document editing: Google Docs, Slides, Sheets, LibreOffice
Photography: Darktable, Sony mirrorless
Email: Thunderbird
Direct communication: Google Voice, Signal, SMS
Social media: Mastodon, Fediscience.org, Phanpy
Threaded communication: Zulip, Discord
Internet publishing: Google Sites, Namecheap
Internet browser: LibreWolf, Edge
Password manager: Bitwarden, Google Authenticator
Audio interface: M-Audio Air 192|4, Pyle 3100, KEF LS50
Software mixer: Voicemeeter Banana
Search: DuckDuckGo
Internet browser: Iceraven
Software Libraries: Google Play Store, FFUpdater, F-Droid