Simply create and toss the following on top of the bottles:

Round 1: Ball
Round 2: Man
Round 3: Magic

Scribblenauts Remix 6-6 Cheats Hints gallery:
6-6-1-a: Knock over the bottles.
6-6-1-b: Throw objects at the bottle to knock them over
6-6-1-c: Heavier objects will work better.