Then cut two pieces of fabric this shape. Preferably plain not patterened, and loosely woven so that the pointy bit of the earring will easily pierce it and not leave a mark. Test it first before cutting the fabric out, I used dark blue velvet. At this stage you need to choose something to decorate the top bit, it's easier if you sew this on now. You can use some contrasting fabric, or ribbon, or buttons or beads, let your imagination run riot. I cut a flower pattern from a piece of cotton fabric, sealed the edges with clear nail varnish, and hand stitched it on with invisible thread. You could embroider your own design by hand or machine. Or you could personalise it with a name if you are giving it as a gift.
First a small coathanger, cut two pieces if thin foam, one to fit the triangle at the top, and one to hang below the bar. Tack them into place.
Then you sew the two pieces together inside out. Sew the sides and the top bit but leave a small hole for the hook of the hanger to go through. Turn it the right way and put the hanger and foam inside it, then neatly hand stitch the bottom together. Because I have used velvet you can't see the stitches.
Finito. One earring tidy.