One internet connected computer could make many paper wallets of whatever denomination they wished and then use those as currency. As long as it’s provable that the paper has not been spent which a hologram or one of those gift card scratch off things would help with. Anyone who receives such a paper that has not been tampered with can be assured that the money that it claims to have is actually there and can take it to any internet connected computer in the world and transfer it to their own digital wallet from the paper wallet. Or they could broadcast the transaction over any kind of transmission medium up to and including amateur radio over HF.

Edit: Unless I’m doing my math wrong, which I totally could be, it would take about a minute and a half to broadcast a current Monero transaction over HF amateur radio with a possible maximum of 6 minutes if full chain membership transactions are 10kb (which i have heard as an upper limit)