If you'd prefer to donate using conventional currencies that is still quite available. I'm not sure if it really counts as a big positive when governments just incur additional overhead trying to process strange currencies instead of letting banks handle the exchange and just ending up with useful and liquid local currency.

And countries at war often use auctions of memorabilia or other objects to raise funds - selling an NFT is just a shift in medium.

>I've been searching for an example of a net positive use of crypto, this is it.

A corrupt[0] government collecting money through opaque organizations to use for military purposes and "humanitarian aid" is the best we've got?

[0] https://tradingeconomics.com/country-list/corruption-index

Yeah, crypto isn't awesome in my view, but I've been trying to play devils advocate for myself to challenge my opinion. Thus far no dice until this. It's not much, but it atleast helps me confirm my view that crypto isn't living up to it's value prop.