Store / Persist Google OAuth 2.0 Token for Ongoing API Calls.

Hello wonderful people! 

Any ideas on the best way to manage a Google OAuth 2.0 token? How can it be persisted/re-used? 

Background: I have installed the Google OAuth Extension and it works fine. However I need to persist the token to use with other Google APIs and I cannot determine the best approach. Can anyone assist with some direction / best practice? 

Ideas so far:

1. Store Token in Database? Easy but not so great from a security standpoint. 

2. Store in Xano Token (extras)? Becomes complicated to decode and auth in the front end and potentially exposes the token (Xano Auth on Weweb)

3. Store in Xano Global Variable?  There isn’t this capability as far as I can determine.

4. Call the OAuth extension? Slow, overhead and I cannot work out how to do an async call or figure out how to redirect with the ?code from the Google service (OAuth Init).

Hoping someone has some thoughts, solutions or experience with this use case.