Widgets to open and edit specific notes would be nice to have. See these related feature request discussions:
- Open specific note: Feature Request: Widget Shortcuts to Notes on Mobile
- Open 5 most recent notes (pull request closed): Proposal to add Android App Widget - #26 by Imperial_Squid
Mobile has plugin support, but I don't know if a plugin would work for this. Maybe automation apps like Tasker or Macrodroid would.