I feel your pain. Those little power supplies are practically littering our house. I found some multiple outlet boxes with the blades oriented 90 to the sides so the adapter hangs over the side. Mounted on a wall, this makes a very neat arrangement. We're in the process of replacing our aging TVs, and I'm giving up on wall mounts, just too hard to get to the electronics when necessary. I did get a really substantial uninterruptable power supply that everything plugs into. We constantly have quick powre outages that crash the drive in the cable box and force a complete reboot, When it trips, it makes a high pitched whine and has to be reset to shut off the signal. Don't mind if the TV goes off, but we've been waiting a week for a new cable box to arrive. All our recorded stuff is, poof, gone. Going all HDMI this time.
The more I do, the less I accomplish.