This faucet still has >400 coins... and you can get a max of just over 0.8, so it fits your bill:http://bitcoinfaucet.uo1.net/

Or... just set your rig to point to testnet pool and mine some yourself? Shouldn't take more than a few minutes, assuming you already mine Bitcoin.

P.S. Your error message doesn't seem like you're trying to access a faucet at all... "Not enough funds in the wallet to tumble" suggests you're trying to use a mixing/tumbling service?