Silicone gloves that are heat resistant and waterproof [2] are a god send with BIAB. Lets you squeeze with impunity.

Refractometers are always good, as well as pH meters.

Searching through the early access list, there are a number of food scales on there. Do that.

What I'm on the lookout for is a vacuum sealer and bags. Just picked up a pound of Mosaic and no way to split it.

Adding to my list.
Rubbermaid Fast Track to hang all of my gear