I like that in the Alphas and betas the AI used stuff that you needed so I have a solution to that.
Crime scene: have Keith use the crowbar to trie to pry open the basement door, of course when the Crime scene area is over and the door is open this task will be gone unless you restart story mode.
Bakery: Let the Baker use the scissors to cut open a bag of powder in the kitchen and maybe in the backyard of the Bakery the vandals will cause a fire and the Baker will get the fire extinguisher and get rid of the fire.
Taxidermist: Maybe instead of the Taxidermist using a item he can mess with the deer skull and fridge puzzle.
Mayor: Let the Mayor use the Music record and put it on a different record player and dance for a bit and return the record.
Mr.Peterson: Let him use the crowbar to pry some boards off the walls and let him use the scissors to cut open some trash bags and check inside of them, You know since Mr.Peterson is a little strange.