Decide on a vignette to create and create the assets for it. Showcase your vignette with beauty shots and showcase each hero asset separately. If you decided to take a modular approach to your vignette, showcase the modularity of the pieces together.
Echoing the environment sentiment. You'll have lots of chances to make props, and also get the benefit of using those props in context as opposed to isolation. If you aren't sure which direction to go in, exploring environments should give you a good feel for making unique vs. modular assets so you can figure out what you…