On my five-month US trip in 2021, I ended up deciding not to take my Olympus camera simply because of the added weight. I left social media in 2020, but I still wanted to document as much of the experience as I could in particular to help me remember things years from now. It will also allow me to share (a resonable number of) photos in my personal quarterly newsletter.
I also enjoyed sending postcards to friends partway through the trip, sharing stories of life on the road.
Although I wasn’t buying souvenirs - pack space comes at a premium- sometimes stuff gathers. When it was scannable (like receipts), I use the Dropbox app to scan it, or I took a photo of it. And if it was truly special, I made space for it.