I run one of these on my desk 24x7 with a raspberry pi and a 3D printed monitor that simulates a CRT. I tried with a real CRT TV but the frequency and having it at the side of my main monitor started to make me sick.
What do you mean by "sick"? Headaches from coil/flyback transformer whine? Perceptible flicker due to the CRT being in the corner of your peripheral vision?