- Island Inventions-
Numbers
 

Aaron's Cradle
Creator: Locke
STATUS: FUNCTIONAL
ALSO USED IN:  The Greater Good, Born to Run, Exodus 2, multiple season two episodes.

Locke builds Claire a surprise crib for the coming birth of her baby.

Boar Trap
STATUS: FUNCTIONAL
Creator: Danielle

Hurley on his search to find Danielle, comes across a boar caught in a rope trap with a piece of flesh missing.

Mace
Creator: Danielle
STATUS: FUNCTIONAL/NON FUNCTIONAL
ALSO USED IN:

Hurley almost gets wacked by Danielle's huge wooden mace, when he goes looking for her to confirm what he believes, that the numbers are...CURSED!

Rope Bridge
Creator: UNKNOWN at this time
STATUS: NON-FUNCTIONAL

There was a rope bridge spanning a gorge and Hurley makes it across just fine, but when Charlie goes to cross, he almost doesn't make it as the weak bridge collapses while he is still on it but jumps to safety just in time.