What I am referring to are the tile tattoos I just found over at 2Jane. These are similar to the idea of wall decals, only they are made specifically for tiles, and cover a multitude of tile design crimes. My kitchen backsplash is made up of primarily inoffensive basic white tile, but every so often there is a random tile with a really terrible fruit pattern on it. These tile tattoos are perfect for someone like me, because they offer a really affordable way to cover up the tile crime, yet are not permanent - just in case tiles with really terrible fruit patterns on them suddenly become the next "it" thing for kitchens and I decide to unearth mine.
You can find these at 2Jane for $16 for a set of 6. By the way, I can think of many, many criminal bathrooms that would benefit from these little items as well.