Just need to know what can lead to a kick.
Sometimes,
Kick
Up+Smash
Forward-Tilt
Up-Throw
Down-Throw (Tech chase near edge, or bad opponent DI)
Dash Attack
Up+Tilt
DownTilt(Enemy at really high percents like 100+%)
N-air(Sends them at weird angles and positions)
And Even out of Up+B, if you hit Fox Falco or Captain Falcon with it while Stalling.
All of those above depend if they are a fast faller, floaty, Crouch cancelling, Not Crounch Cancelling, Directional influence, and Damage they have.
Most of the upward sending moves, may only work truly well against fast fallers. Although some upward sending moves work on floatys at low %'s.
Some less likely moves to link to kick are:
Up+air
Forward-B
Downair
EDIT: by less likely I mean nearly never >.>