Etsy seller Andrea y Diego makes storage benches that are shaped and colored like blocks from the classic video game Tetris. Each square of her 5-piece set is 20 centimeters across, so the units are about 40 cm deep. They're made of artificial leather and wood.
Be careful: if you arrange the blocks so that the form a horizontal line, it disappears. Don't interlock them.
-via Technabob