The calathea's painted leaves, backlit by the sun and scattered into prisms — the prayer plant's most cooperative form yet.
About 5 by 4.5 inches — stick it to a clean window with direct sunlight and watch the room fill with drifting rainbows. Removable and reusable, so the magic can move from window to window.
For calathea keepers who've earned an easy one. Direct sun, zero humidity complaints, daily light shows.