Abishek Muthian (93) Ideator

Found a self hosted, open-source archiving tool recently - https://archivebox.io/ which can save to the Internet Archive and so should be able to do what you're asking.

RentMyCPU - https://github.com/franklbt/RentMyCPU seems to run webassembly files across devices to achieve distributed computing and the associated commercial service seems to add incentives to those who lend their compute power.

I haven't tried this yet, But I'm eager to do so soon.

https://www.myheritage.com/deep-nostalgia animates family photos, excellent ethical usage of deepfake to add life to old photographs.

https://donquixote.fun/ solves this problem by translating classic literature to different languages with simple interactions while we read it.

WhatsApp currently does that i.e. 'Notify contacts' after changing the phone number - https://faq.whatsapp.com/android/account-and-profile/how-to-change-your-phone-number/?lang=en , perhaps other chat apps does that as well because they are the once having the ability to sync and message contacts.

But I don't use WhatsApp or most other real-time communication apps, So this does that solution doesn't work for me and but it should for many.