Good question, Jazzy. I'd probably do something similar... a few personal artifacts and pictures along with a description. Which ones though? Don't know.
Reminds me of a recent experience... I had pretty much 'cleaned out my desk' a while before retirement, to make way for my trainees. See, my desk was the central operational point of a Water Treatment Plant, and they really needed that space to work. But I had accumulated thirty-some years of knick-knacks and stuff, not just swag from trade shows, plenty of that too, but I mean a few useful things... I packed up certificates in frames, awards for whatever, personal items, pictures, books... just moved it all out of the way and let them sort of take over that last month or so. I had everythng condensed down to two boxes (impressive) and ready to leave with me, all the useful items I left for the team. I thought I'd spend a few days sifting through it once I got settled-in at home, and hang a few frames up, maybe decorate my desk here at home to remind me of those days as an Operator. Guess where those boxes are... (?) Ha! - right in the closet I shoved them in when I got home that last day. The one outstanding item, a potted plant... it seems very happy on the kitchen table after living on my desk for years.
I'm not sure when it dawned on me that I really didn't want to see any of those things or be reminded of the past 30 years for a while, so I just subconsciously avoided it. Maybe I should make a time capsule to myself, and open it in another 30 years? Sounds about right.