A simple idea to add a little oomph to kitchen cabinets that are looking a little down and out. You could go a bit retro as shown in the project photo (these tiles remind us of "everyday plates" that we used throughout our childhood), or could simply add...
...texture or color with more "natural" or single-hued tiles.
It seems to be a preferable way to go as opposed to adding pattern with wallpaper or contact paper, as the tiles will be long-lasting and easy to keep clean, important considerations in a kitchen.
According to the blurb, it sounds like an easy DIY, too; this was done with a premixed mastic and grout. The instructions specify Elmers grout, which is "sold in a tube and spreads like glue".