2021 Inktober52 Prompt#12: Microscopic

I need a good idea for this prompt...

Okay, my friend suggested I draw a stentor coeruleus (don't ask me, ask her) for this prompt.  I had no other ideas, and 2 weeks late I decided to go with her idea.  I also attempted to draw some ants to make up my signature (only partially successfully).  As I only had a biro to do the pen version, this one came out rather rough (and reminiscent of my earlier sketches).  On the positive side, today I not only drew the sketch for this prompt, but also for the new prompt that I got yesterday, as well as an initial pencil sketch for last week's prompt (which I will finish in pen in a few days time when I'm back at my place where my better pens are).