Stylus Noob

I setup a Dell Inspiron 2-in-1 for my Dad with Fedora 40 Kinoite. He wants a basic stylus but I don’t know anything about them. All the info I can find on the product page is saying that you can use an “active pen.” What am I looking for in a stylus to let me know if it’ll work? The Dell and Wacom stylus’ say they’re...