Steam Wallet "withdraw"

keys

drugs

illegal merchandise.

You can not use wallet funds for anything that's not on steam

Buy Fortix and Skyrim and then give both of them to the homeless, The Gods of Awesome will then give you a sword of plot advancement to get you into the amazons (women, not the site) lair, defeat the evil dragon of Narnia, and then you will have all the internets in the world. You may then sell these internets to random passerby's and then use that money to get whatever you need on amazon (the site). I guarantee this plan will work or your money back.

coke

As others have said, it would probably be to buy some games as gifts on Steam and sell them for Paypal/Amazon on Steamtrades. If you're in a hurry, you'll likely take a bit of a loss. The most economical way to do it is to buy games when they're deeply discounted and them sell them later to people who missed the sale. Then you can charge more than the sale price, but less than full price.