[Q]: Objective: how do you help a hangover?
[A]: take a swig of what got you drunk to begin with.

[Q]: Objective: nail file
[A]: smooth the nail edge

[Q]: Objective: wooden chair leg
[A]: can make a hammer

[Q]: Objective: To open the door,
[A]:
grab the door knob and twist it to release the door latch, the push the door open.