Might could = Maybe

What do y'all wanna do when we get off work?
We might could check out that new restaurant (Maybe we could ...)

Might could = Depends
While you're out, can you run over to Martha's and get the crystal punch bowl?
Might could, if I have enough gas

Might could = unsure of ability
Can you put that contraption together for me?
Might could. (Unfamiliar with task, unsure of ability to complete, but willing to give it a go)