A built-in indoor trampoline?

A landing pad for alien spaceships?

Can you give a hint, because this one is driving me bonkers.

It certainly looks like a drum head. Why all the markings?
So that you can customize it, artistically?

Nope, nope, nope.

Think about the materials...how it was made, and why.

I see paper, tape (double stick?), and small markings at regular spacing, maybe every inch?

Are they for plotting some sort of graph or enlarging or reducing a drawing that then gets transferred to something like a drum head? Are you going to Peartify your drums?

Is it something to do with some kind of satellite dish?

Is it a template for making drum heads?

it's for cross stitching. hehe...just kidding...:p:

is it a template for putting a design on a drum head?

Please, allow me to relieve you of the misapprehension that this has anything to do with drums, drum heads etc. It doesn't.

What kind of head is it for?

So, does it have something to do with drums?

A base for a pop-up tent?

Is it a template for a sumo robot battle ring?

If those are 1 inch spaces it is ~20" dia.

What is the material? Paper? Why the tape at the circumference?

You're making an air gladiator ring

So, a pup tent?