anyone else a data nerd about their fragrances?

i'd love to hear what details you keep track of and how!

for me, some of the most useful data are:
source (e.g., online platform or person's name)
estimated fill level at time of acquisition (i often get partial bottles)
cost/mL
bottle's full volume
size (sample, mini, travel, full)
dispenser (atomizer, splash, dabber vial, applicator wand)
date decanted
date gifted or returned to someone
date emptied

@fragrance