Picture by Vera Kratochvil
Well, not actually everywhere, but quite probably on the roof above your head and the floor beneath your feet - and if you're in a bathroom or kitchen, quite probably on the walls, as well.
Then there are tiles on mirror balls and in mosaics and mah jong:
Dressed in style,
Brand new tile,
With your father's old green tie on.
Apparently a short bit of pipe that fits together with others to make a drain is called a tile, too. But we're not going to have to bother with anything so boring today.
Spot the Frippet: tile. This word comes from the Old English tīgele, from the Latin tēgula. Tile meaning hat is a London term, but it isn't rhyming slang - they're just both things that get put on top.