Here's my two cents, for what it's worth (which according to my mom is about a penny)

Plant in pot with frown = you are trying to sell a plant that needs pruning
Foundation with ? = customers would like any kind of scenery update, but not necessarily the fountain
Empty Pot with ? = Customers wonder why so few plants are for sale
Fish = I'm going to buy a fish instead
Baby = I left the baby in the car, better go