For a while, I tried maintaining a combined RSS feed that included posts from all my sundry blogs. I kept it at /everything.rss. It was managed as part of my WordPress blog, and since I’ve stopped using WordPress, I’ve been redirecting /everything.rss to the feed for baty.net, which is either /feed or /index.xml, depending on my blog platform of the day.
I think that instead of that, I’ll piggyback off my @batybot account on Mastodon.social. I crosspost most stuff from my sites to @batybot via EchoFeed already, and Mastodon offers an rss feed for each account. Mine is https://mastodon.social/@batybot.rss.
Soon, I’ll redirect requests from baty.net/everything.rss to https://mastodon.social/@batybot.rss. This doesn’t offer full posts, but rather it’s more like a firehose of links to everything I post. If you’d like to avoid that kind of noise, delete your subscription to /everything.rss. If you are a glutton for punishment, feel free to subscribe.