4. The stuff you came for is in the back of the store.
Most of the staples that consumers regularly shop for are often located at the back of the store, thereby forcing them to walk past the store's less in-demand items on the way there. That provides more opportunity for you to spot something you like -- but weren't planning on buying. Toy departments are often located near the back of the store as well, because pretty much every child will beg their parents to make a stop there while shopping.
(AP Photo/Andy Wong)