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That crossed my mind also. But then I remembered I have a lap board that I have from my grandfather that he used when he would pay his bills while watching tv. After he passed it was one of the things I kept. I think it will work. I will be in a recliner and not a sofa in my office/game room
Lap Board (Natural) (3/16"H x 30 1/2"W x 12 1/2"D) https://www.amazon.com/dp/B0000V075C/ref=cm_sw_r_cp_api_fabc_HXyPFbKD6E52Q
This lapboard makes it all work for me. I play in my recliner more so than the couch, but couch works too. The arms of the recliner hold the board up perfectly.
Logitech G602 mouse
Logitech K800 Keyboard
Some Vizio 75" TV. Has 1080p/120 or 4k/60. Older model but it works for now.
I have the HDMI and USB extender ran under the baseboard between the TV and my desk (all of this is in my bonus room) - so you cannot see the cables between the two.