Cheap and working conversion from s-video -> digital monitor

Anyone has any recommendations about what to get ? I do have an old TV which I'm connecting to my atari800xl however it looks ridiculous, consumes tons of energy, produces s***tload of heat and I don't think it's going to last for too long :-). Yeah, buying another one ? See my 1st point ... The ultimate goal is to have my atari next to me with small display and enjoy the look of it/occasionally running it. I'm pretty sure that such a convertor exists, it's just me not being able to find it.

thank you for all your suggestions.