Thank you for these great ideas Cathy!
The "trail" or "stations" idea seems like the perfect fit for Advent during the pandemic where smaller and "outdoor" mean "safer."
I could also see the "trail" idea morphing into "Advent Worship Stations" as well, with socially-distanced small groups being led to various "stations" in the woods or wherever to discover a scene from the Bible story being re-enacted, or a character from that part of the story reciting the verse and asking a question.
The small group could conclude with the singing of a Christmas Carol/Hymn before moving on to the next station. Invite participants to come in costume and distribute some to those who need them.
This could be a nice substitute for the traditional "Family Xmas Eve" service.
Advent Treasure Hunt?
CreativeCarol, a member of rotation.org, mentioned that your Trail idea reminded her of "geo-caching" -- an activity where participants find "secret" locations using the GPS on their phone (or pins on a Google map). Arriving at the location and using additional "clues" they find a "buried" or slightly hidden treasure (usually a box), open it and add their name and date to the treasure's logbook.
An Advent "Geo Caching" or Treasure Hunt could include special messages/scriptures in each geocache, and perhaps something to collect, such as a small ornament.