Okay so I promised a example for a couple if y'all and idk if you check the chapter each day.... So I made it into its own chapter..

Also it's a sketch not the full drawing
(So I missed some huge details)

Okay so the fandoms I choose is
- Percy Jackson
-haikyuu
-beauty and the best (was watching the human version while sketching this btw)
-full metal
-thor

The references I used so everything makes sense

The case and I might add the flower to make it more clear that is is beauty and the best

The volleyball from haikyuu

Full metal alchemist watches/passes

Percy Jacksons tritan

And finally Thor's hammer,

This is my example of more than one Fandom put together.

But you can also stick to one if you prefer.

I hope this helps if not I'll try and help you out the best I can