You need to answer a given question containing a blank (_). Your answer must be one of the two objects mentioned in the question, for example "trophy" and "suitcase". Your answer must not contain a word that is not present in the question. Please don't use articles (e.g., the, a) before the answer.

We took the tools out of their individual bags and put them in boxes, as we wanted them together, so the _ were no longer needed to store them properly.
bags

I wanted to learn to operate a bulldozer this summer at the mine, so I asked my uncle to show me how to operate the _ .
bulldozer

the box became weaker after it was soaked in water but the bowl is still strong because the _ is waterproof.

bowl