Air plant terrarium party favors using colored sand, seashells, pebbles & beach glass - Raise Your Garden
Amazon.com: Royal Imports Decorative Beach Sand for Vase Filler, Wedding, Home Decor, Arts & Crafts, Fire Pit, Fireplace, Pet Tank Habitat - 4.5 LBS, Black : Toys & Games
Colored Sand - Scenic and Decor Sand by ACTIVA Products