Depending on the size of your table, you may only need one sheet of leftover tile to totally transform the piece. Get the tutorial at Pretty Handy Girl
DIY Ceramic Tile Napkin Holders — Elina from Scrapbook, Crafts, and Cards gives instructions on how to build the napkin holder, and then explains how to use ink and alcohol to decorate the tiles.
DIY Tile House Number Plaque with hidden key storage
Looks like scrapbook paper covered tiles set into a wood table? Mosaico de azulejos decoram paredes e mesas - Casa