Bought a Steam Deck, what should I put on it?

My wife finally allowed me to buy a steam deck because we moved and I now have to spend a couple nights away from home so that I don't have a 6 hour commute 3 days a week. So I now have a steam deck to play on the nights I'm away. I have only really installed steam games, and Zelda: Dungeons of Infinity on it. What are some recommendations of what I could/should be installing?