Not sure if all would be considered sovereign, but these could be tools to protect one's privacy and data:

• GrapheneOS
• noKYC SIM card, paid in btc
• Mullvad VPN, paid in btc
• Proton Email + SimpleLogin for aliases
• Tresorit cloud
• Bitwarden password manager, paid in btc
• Aegis 2FA
• Obtainium for mobile app management
• Bitcoin node with Sparrow Wallet for cold storage
• Mutiny and Zeus LN wallets
• Minibits ecash wallet for spending & zapping privately
• Peach, Robosats, Hodlhodl for buying btc
• Bitrefill for spending btc
• Stacker.News for news
• Nostr for following people
• Signal for messaging and calling
• Antennapod for podcasts
• Newpipe for YouTube videos
• Organic Maps