Should I do something with the holes?

Hint 1 of 14:

Yes!

Hint 2 of 14:

What did you do before with holes?

Hint 3 of 14:

Cover one of the holes with the cauldron

Hint 4 of 14:

Get the Orivor to come out again

Hint 5 of 14:

The Orivor should uncover a pendulum