George R.R. Martin offers you a chance to appear in one of his novels from ASOIAF.

George R.R. Martin, creator of the original series of novels 'A Song of Ice and Fire', which the succesful HBO show 'Game of Thrones' is based off of, is giving you a chance to ride in a helicopter with him and/or appear in one of his novels. 

George R.R. Martin along with his wife have been supporting the Wild Spirit Wolf Sanctuary and The Food Depot of Santa Fe  for a more than a few years, and now they are hoping you can help them raise funds for the organization to be able to provide for the wolves and wolf-dogs they rescue and help protect. A $10.00 donation will automatically make you eligible for a chance to win a meeting for you and a friend, with The Master of Westeros himself, George R.R. Martin. The winner will be flown in from wherever you are in the world. Once in Santa Fe, you (the winner} and a friend of choice will travel via helicopter with Mr. Martin to the Wild Spirit Wolf Sanctuary.

There is also a way you can get a character named after you and be written into a future novel from A Song of Ice and Fire series.
Of course, for this you will have to make a very "generous" donation. The are different levels of donations. The highest level being, the Martyr level.

At this level, you'll get the incredibly exclusive opportunity to have George name a character after you in a future A Song of Ice and Fire novel. There is one male character and one female character available. You can choose your character's station in the world (lordling, knight, peasant, whore, lady, maester, septon, anything) and you will certainly meet a grisly death! 

The Martyr level will cost you a hefty $20,000.
If that is a bit out of your price range, there are also this four other levels:

• QUEEN $4,500.00get script of the first ever episode signed by the cast and crew
  0 of 1 available
• KING $7,500.00get a pair of tickets to the Season 5 premiere
• CROWN $7,500.00Get George R.R. Martin's worn hat!
• HAND AT THE TABLE $15,000.00have breakfast with George!

the rest of the levels are more affordable to the general fans.
 

• RANGER $10.00every little bit helps!
• GRAND MAESTER $25.00Get a thank you e-card
• KINGSGUARD $50.00get an exclusive campaign T-shirt
• MAESTER OF COIN $100.00get a campaign t-shirt and a thank you video
• LORD OF WINTERFELL $350.00get a signed map of Westeros 
  41 of 150 available
• LORD COMMANDER $600.00Get a signed and dedicated Game Of Thrones cookbook
  31 of 50 available
• PRINCE $1,200.00get a handwritten thank you note 

The donations will benefit the following organizations: