Where does it belong?

Question or Hint Answer or Word

Piggy bank Knick knacks (wrong answers: Home decor, Gardening, Storage, Toys)
Plastic serving tray Plastic (wrong answers: Crystal serving ware, Kitchen gadgets, Serving ware, Plastic storage)
Switch blade Case (must be 18+) (wrong answers: Toys, Kitchen utensils , Knick knacks, Home improvement )
Coasters Kitchen gadgets (wrong answers: Home improvement , Knick knacks, Mugs, Home decor)
Tool box Home improvement (wrong answers: Electronics, Wicker, Party supplies, Plastic storage )
How many shelves should there be for binders? 1 (wrong answers: 2, 3, 4, As many as it takes)
What do you do when shelves are full? Salvage and organize (wrong answers: Keep stacking!, Pile it up!, Clear the whole shelf, Throw away the item)