You can probably whip up a token like this quite easily.

I'd say that the technology side isn't that bad, but what you do need to think about is both the tokenomics and the government side of things.

E.g. how are you going to ensure that the token will retain its value when the actual fiat is worthless? And how are you sure that this will be propagated and massively adopted within Ukraine when so many things are happening at once?