Personally I use memos as a Google Keep replacement. There are mobile apps for it as well called moememos.

Check out https://usememos.com

I do the same except I boot a usb installer instead of PXE.

Windows 11 on my main desktop, Debian + KDE on my garage desktop, and Debian on my home server and cloud server.

I only know how to do it manually by editing the url. Say you want to visit “asklemmy” on lemmy.ml and “asklemmy” on beehaw, but through lemmy.ml. The two URLs for this look like:

lemmy.ml/c/asklemmy lemmy.ml/c/asklemmy@beehaw.org

This may be a bad example because I don’t know if beehaw actually has an asklemmy community.

kbin.pub/c/unixporn@lemmy.ml

Exactly, can’t join another instance if they don’t accept your application.