Hatiora Salicornioides
Dancing Bones Cactus (Hatiora salicornioides) (Britton & Rose): This gentle, Brazilian cactus has stems of green, bottle-shaped segments with soft, fuzzy bristles. It branches freely and can grow arching to pendant stems up to 3.0' long. In the wild this species is epiphytic, meaning it grows off of tree trunks instead of the ground. Young stem segments can produce yellow to orange flowers at their tips. 
This cactus variety will not survive a hard frost, but if there is a risk of freezing temperatures it can be brought indoors to grow on a sunny window sill or under a grow light. Cactus need bright sunlight, great drainage, and infrequent water to prevent rot. Pick containers with drainage holes and use well-draining cactus and succulent soil with 70% to 80% mineral grit such as coarse sand, pumice, or perlite. Water deeply and wait for the soil to completely dry out before watering again.