Passwords, calculator, music, random notes, address book, porn, photos, video shorts that I archived, airline apps, QR reader, Embiggen, texting, email, weather and surf forecast apps... And a few apps that I was frankly reluctant to install, but had to (because that's how gov't handouts are doled out). Not to mention the phone is what I use to get emails authentication codes in 2FA setups.
And I always tell people to use email (NOT phone device / number) to receive authentication codes. Use phone to check email, all right, but don't tie authentication to specific phone device. Secondary means of authentication as a backup - OK, use phone. But primary - it's gotta be email. Gotta be disconnected from the phone.
I do consider my Forums account an online asset. There's still plenty to do on a laptop for which a phone is just too small and clunky.