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The Banker's personality is one of the most essential components of the show, and on many occasions has generated good or bad offers, gifts and surprises. Such surprises have included early box swaps, chances to double offers, offer increases, offer decreases and additional gifts. On some shows, the Banker has offered items such as a copy of the rules, two weeks of therapy, the book "How to Win Friends and Influence People", a loofah, "a train ticket back to wherever you came from" or even included the contestant's lucky number into the offer. On 15 April 2006, the Banker doubled contestants Gabrielle's and Savvas' winnings, after they both revealed they would be donating the money to charity. The Banker has also played mind games with contestants by only offering box swaps, substantially low offers, decreasing offers and threats to other contestants. On some occasions, the Banker has given poems and gifts to the chosen player. These gifts have included a bottle of bubble bath, a mini replica of a "Deal or No Deal" box, a bunch of roses, a "Deal or No Deal" mug and champagne.