Jack in the box

When jack gets to the top of the spring i would like the spring to curve left and right and bob up and down a little.
when i parented jack to the spring he scaled when the the spring was scaled.
any ideas?
this will become a gif


Like most things in blender, I’m sure there is more than one way to do this; but I would have used armatures. You can pose the armature jackknifed or even move each bone down until they are all in the same spot then keyframe them moving up. Then once Jack is fully extended, it is a simple matter to have him sway and bob around.

By manually moving it bit by bit?

well you could do that, but I was thinking that you keyframe the armature at the 2 extremes of the bob and then tweak the frames in between if necessary.