I try to use gift cards when possible, if there is no offer available I’ll use Revolut or bank transfers. They’re both KYCd services though so I don’t like using them and I try hard to avoid it. I’m trying to find a reliable seller I can buy from with cash in an envelope but haven’t found ...

If you are in Europe Bisq is great also for bigger amounts (i think 1 btc a day wouldn't be a problem). But not the cheapest possible way (maybe around 1-2% premium), kraken also has an otc desk, don't use coinbase they are really bad