@mm; I few Hunger Games drink ideas include:
Water served in inexpensive canteens like the Tributes carried in the arena
<a href="
http://www.fictionalfood.net/2011/11/capitol-orange-juice/"> Capitol Orange Juice </a> served with a lace embellished straw.
Hot Chocolate that the Tributes were served in the Capitol
Vanilla Milkshakes served with a straw accented with a white rose to represent President Snow
Red "Blood" Fruit Punch
Hope this helps!