A fun thing about the Twitter "Twemoji" is that they're freely licensed - so here are three of them in embroidery form.

They all fit within an 18mm square, perfectly sized to go on my small square or octagonal snap tabs - and as a bonus, these three come with a fun Earth Day design.

The files come in all the formats Ink/Stitch can produce, along with the SVG source file that you can edit or resize in Inkscape+Ink/Stitch.