Good chemistry experiments/projects
What about browsing across


the section Laboratory Experiments in the Journal of Chemical Education?  This month (march issue), for example with "Unboiling an Egg: An Introduction to Circular Dichroism and Protein Refolding" by Hoben et al., (DOI:10.1021/acs.jchemed.6b00319), or "Demonstrating the Effect of Surfactant on Water Retention of Waxy Leaf Surfaces" by Chiu et al., (DOI: 10.1021/acs.jchemed.6b00546)
more broad than the journal, visiting educational ressources the American Chemical Society offers
as an example from the other side of the pond, a collection provided by the Royal Society of Chemistry (you may refine your search by age of the audience)
albeit less chemistry is not the barycentre, bring science home in the Scientific American


and then, choosing while taking into account what resources are at your disposition.