Plant cell models. Add wooden popsicle sticks w/ tape for cell wall, Ziploc bag (cellular membrane), Aloe vera gel (cytoplasm), bottle cap nucleus, plastic beads (ribosomes), small blue balloon partially inflated ? (vacuole), plastic fishing lure (mitochondria), green oval bean shaped bead (chloroplasts),.... What a fun visual!
This is just one poster available from International Paper in their "Life of the Forest" educational program. Download all of the posters/handouts from this site. They are great forestry resources for kids.