But seriously, if you're on a budget...
Just get generic Vodka and Whiskey and there's TONS of stuff you can do.
Vodka+OJ
Vodka+Grapefruit Juice
Vodka+Cranberry Juice
Whiskey+Coke
Whiskey+Dr. Pepper
uhhh....yeah I'm kind of out on recipes. lol.
http://allrecipes.com/recipes/drinks/cocktails/If you don't trust that site just Google 'Cocktail Recipes'... I seriously wish I looked at sites like these back in the day...Whiskey+Coke or Vodka+OJ was all we fucking drank >_< (Beer too)
You can get pretty creative as well...just brainstorm that shit.
Also,
drink responsibly...this phrase cannot be stressed enough...
EAT FOOD WHILE YOU GUYS DRINK!!!