Ask HN: What apps/tweaks to get to maximize Touchbar usefulness?

I'm finally moving to a Touchbar MBP, and I bet a lot of other people are too. I've followed discussion about the TB but haven't paid much attention to how to improve it.

I'd love to hear what people are doing to make it as useful as possible. FWIW I'm a developer, but I'm interested in anything and everything.