I did this project with my 8th graders and they loved it. Got all the large candy boxes at Target on sale :). Let me know how it goes with your class.
8 1/2 x 11 watercolor paper
Pencils and erasers
Small water cups
Start by discussing the movies and how much candy and food you buy. Show them pictures of candy online and show them the colors etc. Have the supplies all out and get students started with drawing the box and using the watercolor pencils properly. Tell them not to leave pencils in water etc and they can use small brushes with water to spread color. Everyone finished and had a great time and I let them take the candy home 🙂