So I too have been toying at the idea of some discrete IR illumination. I've looked several products up that struck home for me. I'm a younger master electrician but I dabble in electronics more so on the side.
IR LED strip lights were my first thought along with embedding them in some kind of...
I have 2 of the 2mp versions recessed into the eaves on front of the house. I've found that turning the auto tracking feature off and instead triggering the autotracking with a smart event like line crossing or intrusion detection cuts down on alot of daydreaming. these cameras like to do.