I suggest a Work board. Where players can put up their services for a fee. I imagine it would work two ways.

-Workers perspective: Post a looking for work request with which class(es) you want to use; Bot, Min, Weaver, etc. Your preferred work type; Farming, Crafting, Spirit bonding, Power leveling, etc. And your maximum time/desired price.

-Employer: Post the job you want done, what classes you need, what materials you will or will not provide and your price.

The goal of the work board is to provide income to those who aren't as gifted with the market as others and to possibly alleviate the poverty I find on a fairly regular basis, what with travel, repairs, and materials driving pocket books into the ground.

I'm definitely open to corrections/suggestions/criticism.

Some less common jobs could include; tanks/healers/dps for hire, raid coaches, Spirit bonders, Raid runs, Commissions, FC recruiters, basically anything you can think of.