I haven’t used any but have researched it some:
Minisforum DEG1 looks like the most polished option, but you’d have to add an m.2 to oculink adapter and cable.
ADT-Link makes a wide variety of kits as well with varying pcie gen and varying included equipment.

Homebox has this capability too, you can generate QR codes for assets and scan it later to identify whatever’s inside.

I think it becomes more useful as you accumulate stuff - I get frustrated when my wife buys crap on Amazon that we already have. So while I don’t have the time or energy to sort everything in our house, I am beginning to catalogue things as we buy or find them in the hope it becomes more useful over time to find things we rarely use and/or avoid re-buying excess items

https://a.co/d/hh2N98y Something as simple as that, though I’m not sure 5v/3a is enough for a pi5 you’d have to check power specs

I would especially advise against relying on battery banks due to the heat, if you’re just going to use it in the car and already going to the trouble of customizing so much hardware I’d find a way to run a power supply off a switched 12v fuse or wire from the car - just convert to 5v/USB power. I’m sure there are generic kits online

Try reading next time: “No casualties”