Thinking of buying some Trezor hardware wallet to store keys for Monero cryptocurrency, FIDO2 keys, and passkeys:
Is Save 7 confirmed to work with Monero GUI, or should I rather buy the Safe 3 or Save 5?
Hi @notSoClever , Trezor Safe 7 does support Monero 
We are still waiting for support in Monero GUI. For now, you are able to use Trezor Safe 7 for Monero with Cake wallet and Monero One wallet.
Support from Monero GUI should come in the future as well hopefully.