It's been said but heavy cream is a great alternaive, I use about one tablespoon per mug. Sometimes I add a tiny bit of vanilla extract and a small amount of powdered sugar to the cream and whip it with an electric frother.
A dairy free alternative is oat milk, the thicker store bought ones are great, but I usually make my own. Just blend a 1/4 to 1/2 cup of oats to 2 cups of water in a blender for 30 seconds and strain through coffee filters or some salvaged fabric from an old shirt. It can be heated and frothed, then poured over the top of your coffee for a nice foam.
To be honest though, usually if I'm not feeling like straight black coffee I just add 1/2 tbs of brown sugar and that's more than enough for me.
Made the switch to Fennec and IceRaven on Android, and Zen on my Linux desktop, which also has Windows and Mac versions. Sure, they're forks of Firefox, but they are not subject to the same TOS. I used to use LibreWolf on my desktop but ended up having too many issues with it. Lots of crashing and instablility that regular Firefox just didn't have.
Another great tool for unGoogled Android users is FFUpdater. It will handle updating of many open source (not just Firefox-based) browsers. You could also use something like Obtanium for something less browser-specific.