SUPER HARD RIDDLE, WINNER BECOMES SUPER ADMIN!!!

A secret is in a prop, but has no propeller!

1st HINT: ? comes from trees, trees come from earth, creese it, and try to make it float! Sinks because water is heavy to the iteam! Get this, u know where the secret is!!!

2nd HINT: Everything runs by something! We run by our brains! How does the iteam run! Answer this, u get what the secret is!!!

Question: what is the secret, where is the secret? (the answer is NOT a prop!!!)