I guess I need something to juggle?

Hint 1 of 5:

Yes!

Hint 2 of 5:

Juggling Balls.

Hint 3 of 5:

Make them at the Toy Factory.

Hint 4 of 5:

See the 'Where do I find a toy' hint in the General Hints.

Hint 5 of 5:

Make sure you make enough balls to impress the Circus Dog.