May have lost 0.05 BTC sent by the faucet...
OMG, this is such an awesome thread for this post alone. Can you imagine getting a payout like that from a faucet these days? How much could you claim a day back in 2011 or whenever it was that faucets started? I was not into btc yet back then.
In January 2011 there was only one faucet that I know of, run by Gavin.
I got my first 0.05 BTC from it:

Edit: I don't remember if there was a daily limit, but Bitcoin was worth so little at the time that it didn't seem worth abusing it. 0.05 BTC was worth around $0.02 at the time.