Need advice....recommendation for second graphics card

Hey folks...hope the holidays are going well with all of you!

For context, I have a nicely tricked out rig with a RTX4090 and triple monitor setup. Love it, but want the ability to add a smaller (low profile) monitor and an additional output to my TV for when I want to stream video to it.

I only have one more output on the RTX card, so either way I need another graphics card. The smaller monitor has mini HDMI and USB C, and the TV is just standard HDMI.

So does anyone have a good secondary card they can recommend? Looking for something that is smaller and doesn't require to much juice to run. And...am I risking any performance hit doing so? As in affecting gaming or other such activities? I can't see how, but thought I would ask. To be clear, this card will ONLY need to do basic display and playback of video.

Any pointers or recommendations would be super helpful.

Thank you!