I have served as Verbal faculty training students for GRE and SAT. Teaching is my passion and I am also involved in teaching small kids in my neighbourhood.
My way of enhancing vocabulary for kids aged 8-12 years is by Etymologies. Again, as a SAT and GRE faculty, I came up with all sorts of ideas to make my students remember the meanings of the words. That ways, the difficulty level was eased.
If that is what you are looking for, I can come up with drawings that can be related to vocabs.
Happy to discuss the project.