[Q]: Objective: pins
[A]: can be used to stir compost and encourage microbes

[Q]: Objective: To conserve water,
[A]: do not leave the water running while brushing your teeth.

[Q]: Objective: One seeks to decorate their fire place.
[A]: One could put a decorative mantle in.

[Q]: Objective: quarter
[A]:
can be used to play a game on an arcade machine