You can use any reliable decentralised exchange for this purpose as they don't require KYC. Personally I stake different coins on Pancake Swap because it is on a cheap Binance Smart chain. You can choose from Uniswap or 1Inch that are also good DEXes. But actually, APYs are rather small when we are talking about staking stablecoins, but they are still higher than just deposit in a bank.