Zanthia disappeared! How do I make the potions?

Hint 1 of 5:

Did you look under the rug?

Hint 2 of 5:

Still can't find her?

Hint 3 of 5:

You'll have to make them yourself.

Hint 4 of 5:

She told you to pick blueberries for the potion.

Hint 5 of 5:

Try using something else that is blue.