I used a Steam Deck dock with an HDMI out. Worked just fine!
I used my SteamDeck as a media center for a while, and it worked pretty well. I never had any battery issues. It did have a little bit of trouble on super high-quality videos, but it worked well enough for the rest
https://www.businessinsider.com/joe-biden-new-accusers-inappropriate-touching-report-2019-4