Here's how we did it. Gather your supplies - we used:
This stuff is thick and gooey and quite smelly - make sure you cover all surfaces well!
Simply cover your tiles with a good few coats of the paint. Chalkboard paint generally covers well but a few coats will show less of the grain through.
When it is completely dry, you can glue it to your choice of tray - here we used a round silver plated tray. E6000 glue is ideal for this as it will hold fast, or you can use any superglue type of adhesive that you may have at home.