Cotton gloves & clear sauce dishes
Tight cotton gloves are great to wear under nitrile / latex single use gloves as they soak up the inevitable sweat that gets really unpleasant during a long priming / pro-seal session.
Found some clear dishes (60ml IIRC) at a catering supplies that are just the right size for a 30-40g batch of pro-seal, and are clear so you can see if its been mixed up properly.