I've been missing the old internet. A little while ago I tried to find StumbleUpon and discovered it's transformed into more of a social media thing. I took a couple days to recreate what I thought of as the core StumbleUpon functionality - click button, get random site. And I've been trying to aggregate what feel like unique, individual, not well known sites into my index for it.
https://stumblingon.com
It currently gets about ten unique visitors and one or two submissions a day.