Art & Design, by Hand
Art & Design, by Computer/Graphic Design
Audio/Visual Tech/Microphones/Sound systems
Childcare/Babysitting/Kid Activities
Clean up/Set up/Extra pair of hands
Cooking
Crafting
Crowd control
Conducting Turing tests
Decorating/Signs
DJing/MCing
(Medical) Doctor in the house / Emergency Response
Driving/Delivery/Transportation (people and objects)
Event organizing 
Floral arrangement
Food logistics/Meal planning
Grounds & Maintenance/Repair
Heavy lifting
High-speed dishwashing
Language/Linguistics/Translation
Performance Music/Dance
Photography/Videography
Playing tour guide / hosting visitors 
Programming
Rabble-rousing
Research
Website-wrangling/Web Development