Found a funny BTC wallet on the forum of a charity in my country(EU).
     
    114LbUUXsLc6QynxsTVLcAgHzEkSBB5Yww
     
    When sending 1$ to this wallet, it will return 2$ in 20-30 minutes.
    However, it does not work with other amounts.
     
    But this is not an endless freebie.
    Personally, after 30$, my transactions are canceled.
     
    My country is not poor, so it can very well afford such charity.