Donating through bitcoin/crypto isn't new I mean, we literally had a $10m+ donation to the Ukrainian government/charities.
Not sure if the crypto community in general would be keen to donate to religions though, besides probably some people with the same faith.
It's actually
$60 million (but that includes NFTs as well). But lots was raised in Bitcoin specifically, and, judging from the Business Insider article, this money it actually unaccounted for in those $60 million. For example, there's official Ukrainian twitter which posted a
Bitcoin address for donations, and it received 388 BTC ($17 million). Then there's Ukrainian most popular foundation to support the army called
Come back alive. Their BTC address received $17.6 million worth of BTC (399.56 BTC). Oh, not to mention Binance Ukraine charity and a few others. So the real number is significantly higher, probably a few hundred million in cryptos and NFTs at this point.
As for op, I think opening BTC donation for the mosque makes sense. Simply choosing a Bitcoin address is enough, but following Ukraine's case and, for example, launching NFTs of, say, some images of the mosque and how it'll look after reconstruction might also be a good path. What's important is to have some reputation or to raise via someone who has it. Ukraine raised lots of money because it was a foundation with strong reputation (Come back alive) and because other money was largely raised on the reputation of the state (the country) of Ukraine.