Spider decorations use batteries (examples include 2 AA or 3 AAA), plug-in electric power for many string lights and plug-in decorations, and larger inflatables that use a built-in blower powered via an included adapter.
Installation depends on the type: window or small lights often include suction cups or hanging holes for smooth surfaces; light strings use plugs and lead cords; inflatables typically include ground stakes, wind ropes and an adapter for power.
Spider decorations are made from a mix of materials such as plastic, wire, polyester and plush, often with sturdy wire legs for poseable designs.
Special features include rotating or multi-color LED projections, flashing or illuminated eyes, bulbs designed to stay lit if one burns out, and items that glow under blacklight.
Some spider lights are for indoor or sheltered outdoor use, while inflatables and certain decorations are listed for full outdoor use and may offer IP44-style water resistance or be made from weather-resistant polyester.
Lighted lengths are typically around 72–96 inches, with bulb spacing commonly between about 3 and 8 inches.