awww, rest in peace to your friend. wishing you only good memories
fwiw, I helped my late Father, before his death, go thru things. he taught me how he could let go of things, even after keeping them for ~80 years, like a photo of him & his best friend when he was 10 or so. things bring you joy & then it's time to let them go. I'm learning to let go w/o feeling the need to get top dollar. some very lucky ppl are going to get some nice donations