How do I get past the Walbots

Hint 1 of 9:

Always check your ceiling before the rainy season.

Hint 2 of 9:

You will need three things scavenged from the asteroid.

Hint 3 of 9:

Do you have the paper from the restroom stall on level four?

Hint 4 of 9:

Do you have the wastebasket from the closet on level five?

Hint 5 of 9:

Do you have the lighter from the overalls in the closet on level five?