So I made some! And a matching needlebook to go with them.
The pincushion is supposed to have edges that are of a uniform length; this one is a little wonky because I didn't allow for seam allowances in one of the parts. Oops.
The needlebook is too big for my liking but works just fine, simply personal preference.
I really like how the second needlebook came out, it's a nicer size, I think.
I'm planning on making a sewing machine cover out of this fabric too, and perhaps another pouch with different dimensions just because.