From Firststreet:

“These decorative roses are so unusual: they come in sets of four, with LED lights in eight selectable color modes inside. When switched on, they bring a soft rainbow of light to a room - or a strobe of changing colors. Can be used as tea lights or floating decorations, centerpieces or pool floats. They’re heat-free, flame-free, wax-free and durable. Each rose comes with two replaceable Lithium batteries.”

$19.95