If you have played more than a dozen or so games then you should be able to choose the “daily quest” gigs. These gigs give one of each type of upgrade item (Birds, Tools, Whistles, etc.) for a given affinity.
- Monday: Food upgrade items
- Tuesday: Fun upgrade items
- Wednesday: Town upgrade items
- Thursday: Home upgrade items
- Friday: Nature upgrade items
Use these particular gigs to farm for upgrade items if that's what you're in need of!