I have an ARTcessories mixer and amplifier stacked on top of each other. Very compact, both are 4-channel stereo. I don't really use the mixer as much anymore,

I have an ARTcessories mixer and amplifier stacked on top of each other. Very compact, both are 4-channel stereo. I don't really use the mixer as much anymore, but it used to be connected to my desktop, laptop, phone and guitar amp. The (headphone) amplifier I connected to my headset, desk speakers and for a short time to a second headset and some recording device (I know, bad idea). When I was playing Rocksmith (think of it as Guitar Hero with real guitars) this was my contraption for routing the guitar sound through a real guitar pedal and maybe playing with a friend now and then who could also wear headphones. Nowadays it's mostly so I can switch between headphones and speakers quickly by basically just turning the speakers on and off. The other thing are the lights that light up the walls behind my screens. I don't have a window there so it's easier on the eyes when the lights are on while I'm at my PC. They are controlled by a wi-fi power socket running Tasmota. On my NAS I got Node-RED running which pings my PC. I have an "automatic" setting for my lights so they are on if the PC is on, or when it's dark and before midnight. The "dark" part is currently determined by the time when the sun starts to set, but I'm planning on using a light sensor I already have somewhere else in my apartment instead. And I still need a better trigger that turns it off for the night - I think the humidity data from my bathroom might be the one, since the last thing I do before going to bed is showering.