I have been lucky enough to see some of Colin McCahon's paintings, They are huge, and looking at them online you cant really get a sense of how the interplay of light and dark, gloss and matt, and tonal blending works when you hover in front of them at the gallery. I thought this piece of packaging worked really well as a mini version. For the artist challenge https://365project.org/discuss/themes-competitions/44932/*next-artist-challenge*-colin-mccahon and also tagging for eotb.
I am giving you 2 challenge options.
1) Mirrors - something creative using mirror(s) Here is a Google link for inspiration https://www.google.com/search?q=creative+mirror+photography+ideas&tbm=isch&ved=2ahUKEwi8laWV_ojwAhVMXqwKHX4HAEAQ2-cCegQIABAA&oq=creative+mirror+photography+ideas&gs_lcp=CgNpbWcQAzICCAAyBggAEAgQHjoGCAAQBxAeOggIABAIEAcQHlCV2xFYvc0SYNzREmgBcAB4AIABgwGIAdAQkgEEMTMuOJgBAKABAaoBC2d3cy13aXotaW1nwAEB&sclient=img&ei=5cV8YPyOH8y8sQX-joCABA&bih=606&biw=1280&rlz=1C1CHBF_enUS758US758
2) Water Crown - I am certain you have done them in the past - but perhaps you want to give it a new twist