Which skill should get a mini-game first?

We want to add skill mini-games — a second way to train a skill, played
rather than left running.

The idea: instead of only gathering or producing the usual way, you unlock an activity
with its own rhythm to it. It might end up faster than the standard method, or slower but
more interesting, or better at one specific thing. It is a new way to earn XP in a skill,
not a replacement for the old one.

We are building one first to see how it lands. You pick which skill gets it.