Option 1;

I'd suggest taking cute game characters(31 to be exact), and spicing it up a bit.

And what I mean by that is...

Turn them into horror characters or just make them scary!

I had this idea in mind for a few days now and I think it would be fun to draw!(also cause I want an excuse to make horror art of characters that aren't exactly realated to horror genre and also I art quite a bit.) So why not take characters that are cute and innocent, and make them into blood thirsty creatures or just make them dead.

Option 2;

We draw/do makeup/anything we can to make 31 phobias as something real, for example thalassapobia(An intense fear of deep body's of water[i.e. oceans].) could be made as a creature lurking in depths of the water below, or Catroptrophobia(An intense fear of mirrors)could be seen as something evil/bad or hideous in the mirror not looking like the person Infront of said mirror.

Or many more as there are A LOT of phobias!

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I hope this helps with what to do for Joltober!

Thank you for allowing me to spread my dumbassry/bullshit excuse of an artist wanting to make creepy things.