1) Current date and exact time (ex. 10/9/23 @ 9:33am)
2) Music / auditory ambiance (ex. X song was playing in background)
3) Where I was while writing (ex. on couch in living room at X house)
4) A trigger memory (ex. travelled back from X destination yesterday)
When I read the entries that include this metadata, it helps me re-live these times and further spark memories around them.
I'm often trying to influence my dreams and make things stick to my subconscious so they will surface up during them. I find your approach interesting.