Nothing fancy. Just thought I'd post the results of me and Dill spending two hours blending every possible combination.
Apple + Apple = Nothing
Apple + Beer = Nothing
Apple + Bleach = Nothing
Apple + Skull = Nothing
Apple + Strawberry = Normal Drink
Apple + Melon = Normal Drink
Apple + Orange = Nothing
Apple + Banana = Nothing
Beer + Beer = High Motion Blur (Drunk)
Beer + Bleach = Suicides
Beer + Skull = Nothing
Beer + Strawberry = Nothing
Beer + Melon = Nothing
Beer + Orange = Bright Flash
Beer + Banana = Nothing
Bleach + Bleach = Nothing
Bleach + Skull = Black and White vision
Bleach + Strawberry = Nothing
Bleach + Melon = Slow-Mo + Everything looks shiny (Mirror's Edge vision)
Bleach + Orange = Nothing
Bleach + Banana = Nothing
Skull + Skull = Nothing
Skull + Strawberry = Nothing
Skull + Melon = Nothing
Skull + Orange = Nothing
Skull + Banana = Nothing
Strawberry + Strawberry = Nothing
Strawberry + Melon = Over-Saturation (Acid)
Strawberry + Orange = Nothing
Strawberry + Banana = Super Speed
Melon + Melon = Nothing
Melon + Orange = Normal Drink
Melon + Banana = Normal Drink
Orange + Orange = Nothing
Orange + Banana = Nothing
Banana + Banana = Nothing