For the cephalopod theme, I drew some squid egg casings, which are weird and interesting but simultaneously cute. Here are some of the reference images I used: 1, 2, 3.
I used these colors:
Color by COLOURlovers
And here's the result:
The background texture is my good ol' kelp again, and the texture on the branches the cases are attached to is a basketweave. My favorites were the tentacle stripe, this very cutesy design, and this more grown-up take.