Fastest way to buy ETH?

Hey all! Looking for the fastest way to get some ETH, I have some USDC that I'm trying to swap but don't have any ETH in my wallet to make the swap. What's the quickest way to get some in? I'm unfortunately still waiting for Coinbase to allow me to withdraw and that'll be another 5 days or so. Is there another way? I saw Coinmama allows purchases with credit cards, is that an instant transfer?