Kokedama (ko-ka-DAH-ma), an ancient Japanese form of bonsai, zoomed from relative obscurity to Pinterest stardom when Dutch artist Fedor Van der Valk playfully hung several from string. (You can check them out at stringgardens.com.) The spherical "container" is really just a ball of moss and mud tied with string. Though Van der Valk strung up everything from flowering bulbs to a horse chestnut tree, tropical plants and houseplants are good for beginners and will easily last a few years with proper water and light.
Combine peat and bonsai mix in a 2:1 ratio. Add water until mixture holds its shape. Pack a dense ball (like a snowball) around the roots, or form a ball and poke a hole with your finger. Tuck in the roots, then firmly repack.
Kokedama planters share the spotlight with mini lanterns dangled from tree branches for a magical mood. Flameless votive candles operated with a remote on set on a timer are the safest, easiest option.