Have the students actually make a Holiday chain to glue their food chain to! Check out the awesome FREE Food Chain Display Template at Teachers Pay Teachers: http://www.teacherspayteachers.com/Product/Food-Chain-Display-Template-1291556
I love this ecosystem interactive notebook for my students. It contains food webs, food chains, energy pyramids, and more. Part of the Earth Science interactive notebook series. Great interactive journal projects for 4th grade - middle school.