I'd probably buy my close friends some stuff then id get myself a sunbeams or Miami night's head prize
Buy the sickest heavy loadout anyone can think of. Im talking a strange fn professional killstreak hot butcher bird mini, strange fn professional killstreak hot fire glazed tomislav, glitched professional killstreak robo sandvich, strange fn hot professional killstreak red bear shotgun, and a siiiick unusual set.
If I didn't cash out (for some strange reason) I would donate some to charity and then buy my dream set for every class in the game.