These are colored lawn lights that are solar powered.

They charge during the day, provided you have sunlight.
Then they glow at night, freely powered solar lights which can be used a subtle party lights

Solar Lighting Purple Tulip Solar Stake Light SLA170SB $14.95	4pk SOLAR-LIGHTED LED LIGHT TULIPS $8.04	4 Pk Hollander Solar Landscape Tulip Lights $7.87
NORWOOD 3646 3 piece SOLAR POWERED TULIP LED GARDEN STAKE LIGHT SET $16.99	3PC SOLAR LIGHTED TULIP GARDEN STAKES NEW OUTDOOR YARD LIGHT DECOR SPRING EASTER $19.99	WESTINGHOUSE COLORED TULIP LENS COLOR CHANGING STEEL SOLAR PATH LIGHTS $30.0