Run a DHT crawler? It can be a bit resource intensive (I ran magnetico for a while) and it'll take a while for it to index enough old stuff for the new discoveries to be actually new, but you'd get a fully decentralized continuous feed of newly discovered torrents that doesn't depend on any centralized infrastructure, just the decentralized bittorrent DHT swarm.
To get a picture of what it looks like, you can check out btdig, it's the same thing so if you click on "recent findings" at the bottom you'll see what a recently found feed of DHT looks like.