2nd 'air-gapped' computer / cold wallet setup for travel I travel quite a bit and don't want to lug around a 2nd 'air-gapped' computer. I know that connecting a hardware wallet like a Ledger Nano S to the Ledger Live desktop app running on a computer that's connected to the internet not considered a 'fully cold' wallet setup. 

I asked if a non-networked VM would do but it sounds like there's no extra security with that.

So, what would be a good solution for a 2nd 'air-gapped' computer for travelers? Perhaps Tails installed on a USB stick or 'OS on a stick' products that are out on the market, such as the Intel Compute Stick: 

https://www.amazon.com/Intel-Compute-Computer-Processor-BOXSTK1AW32SC/dp/B01AZC4NHS

https://www.amazon.com/Intel-Corp-BOXSTCK1A8LFC-Compute-STCK1A8LFC/dp/B00W7KAABK

I'm looking for a solution where I can use my laptop's screen and keyboard.
This seems a lot like an XY problem. For the vast majority of users, the threat model simply does not require more guarantees than those provided by a solution such as Ledger.

Naturally, if you are dealing with very large amounts, you would be wise to take better steps to secure it. But something like a Ledger, which will parse the tx being signed and display the outputs on the Ledger itself prior to signing, should cover most use cases.

Additionally, as Chytrik mentioned, you have wallets such as the Cold Card which can operate without being directly connected to a computer at all, transferring Partially Signed Bitcoin Transactions via an SD Card. 

Beyond that, if you really do need the security benefits offered by a fully offline computer, you should consider buying a cheap netbook or laptop, epoxy the ports, strip out any networking hardware, and verifying it as far as you can to be in a secure state - If you are genuinely moving amounts while travelling that merit that kind of security, then your best bet is to carry the extra 800 gram to 1 kilogram of weight.