A two-piece assembly consisting of a threaded bolt and an expanding clip that can fit through a drilled hole. The clip can spring outward to provide anchorage form the blind side.
A wall anchor or fastener that forms elbows inside the wall to anchor a drapery rod in a hollow wall; similar to a molly bolt.
A bolt with a spring-loaded wing, inserted through a small hole, that expands on the opposite side of a thin surface. Used for fastening objects to a ceiling or other space with only one side accessible.
Rawplug(tm) (plastic anchor giving screws grip on walls)
A toggle bolt is a nut with wings which close for passage through a small hole and spring open after passing through the hole to keep the bolt from slipping back through.
A fastener typically used when attaching a heavy object to gypsum wallboard where there is no stud available for support (i.e. installing a shelf). A collapsible nut is installed into a pre-drilled hole. When the bolt is attached the nut expands and pulls tight against the back of the wallboard, providing extra support.