I found these Emoji for twitter they are open to use, not sure they ever consider them for a CNC carving, You will have to read the lic but from what I can tell … You can use them but attribution is required. I have been playing with a number of these in Easel… They are on github. If you use Twitter they are the same Emoji as on the app. They are nice clean SVG’s. Here is the link for the SVG you will need to download and the SVG are found in the assets sub-directory of the ZIP file.