Star ornament sets typically include a variety of hangers such as lanyards, detachable hook cords, jute or twine hangers, and sturdy string loops for easy hanging.
Most star ornament sets are listed for indoor use. However, at least one large plastic set notes that its painted surface is suitable for outdoor use, so check the product details if you need outdoor durability.
Mixed packs that include stars frequently also contain Christmas balls (shiny, matte, glitter or textured/diamond finishes), bells, small house or sock ornaments, gloves, and star tree toppers.