They are electric plug-in decorations (no batteries). Listed cord details include 5-ft and 6-ft cords and 72-inch cord leads; one projection item notes a maximum projection distance of 25 feet.
Some outdoor items include ground stakes or list stakes and tethers for setup. Inflatables specifically note that stakes and tethers are included for outdoor anchoring.
Many listings state indoor/outdoor suitability and note weather-resistant construction for durability, indicating they are intended for outdoor holiday use.
Materials vary and include plastic, fabric, PVC (polyvinyl chloride), polyester, and nylon.
The projection ornament hangs from trees, rooflines, or porches using a built-in hook and projects whirling multicolor images up to about 25 feet wide.