Password managers don't need gigabytes of memory, terabytes of storage, and a big, power-hungry x86 CPU. An air gapped machine doesn't necessarily imply a serve

Password managers don't need gigabytes of memory, terabytes of storage, and a big, power-hungry x86 CPU. An air gapped machine doesn't necessarily imply a server, a desktop, or even a laptop. Check out the mooltipass, onlykey, beamu, etc. There exist many such devices - some better than others. Note that this isn't an endorsement of the mentioned products, I just mention them as examples. Note also that not all of these devices constitute a true air-gap, though such devices which can display passwords without any kind of connection (be it bluetooth, usb, etc) can still meet that criteria.