Pizza making: Increase pay
Taxi missions: Increase pay by a lot, (Somehow) add things like obstacles
Mail delivery: rather than immediate pay, make it pool into a "paycheck" at the end of the week, and give bonus gralats based on how many deliveries are completed.
Mushroom picking: currently fine
Trash picking: currently fine
Shelling: not sure... Decreased shovel price?
Body part selling: increase pay
Flower picking: UGH... Remove it