I do exact that and rarely move stuff. When I do I rename it. Most of the stuff I have is Zigbee, so I rename it in Zigbee2MQTT, select the option to rename it in HA too.
See if you can reuse the hardware you have. Some „proprietary” lightbulbs are actually Zigbee and all you need is a Zigbee coordinator (an adapter to communicate with them, which works regardless of vendor). See zigbee2mqtt
Have you considered an N100/N150 based mini PC? Not much higher power draw, much better performance, expandability - RAM (up to 32GB), NVMe SSDs, m.2 slots for other devices. You can easily set up a VM/container environment to run more than HA if you need/want to.
My fridge has a small door in its door so I can exchange less air with its outside if I only need to pull out something that’s on one of door’s shelves. The downside is that unlike the main door (which does auto close) it needs me to push it firmly to close.
I have them (Zigbee smart plugs) all over the house. Mostly for power measurements, but I’m using few to control devices. I also have a few thingies I’ve put behind regular outlets.
I don’t know about Steam Deck (so assume it should), but this one works with Switch 2 (and doubles as a capture card).