I happen to do something very similar, I was searching for some old playstation games and for years I couldn´t find them. Lucky me found them a few days ago and I´ve been playing as if it was 1998 and I realized it was about nostalgia, I wanted to play them to remember how i felt 20 years ago.
I´ve been wanting to visit my old school in Mexico city and the places I used to hang out in, I think that will help to bring back some good memories...