Best Value! Glass Hanging Orb for Plant Terrarium or Votive Holder 4 1/2" Perfect as a hanging Terrarium for Air Plants (Tillandsia) 4.5 inches wide with a flat bottom and top loop for hanging and includes the Glass Home Gardens "Guide to Air Plants." Large 2.5 inch opening with small vents for air circulation Clear glass allow full spectrum light for your plants Can also be used with votive candles, great for children's art projects