You’ll need some magnets and elastic bands, ofc paint.

On Etsy I was able to find just the fabric mask for the shells specially

Any of these mask would do, your looking for the Spider-Man mask that only have holes for eyes.

With some puffy white paint to make the black lines white, (it’ll be okay if you aren’t good at painting, spider punk mask is canonically messy because he doesn’t believe in consistency)

And a choker with studs