Off the top of my head, I would buy:

New aircleaner for Motorcycle : $ 50.00
Swamp cooler for house : $600.00
Water Pump for Cooler : $120.00
Lumber and Duckting for cooler: $100.00
Steak and beer for friends
and family to istall
swamp cooler : $ 50.00
Used Pickup Truck : $1500.00
Firewood : $1000.00
Food and clothing for a friend
And his family : $6580.00

The last one is all I could think of for the remainder of the money.

-Joe