The kukui nut tree is used for 9 different reasons, but I'll tell you the 5 most important reasons.
The hard nuts of the kukui tree would be polished, drilled, and stringed. They could be used for garlands and wreaths.
Ihoiho kukui or a kukui nut candle was made from roasted or dried kernels. These, after they were stringed onto spliters of bamboos, were placed in a stone bowl filled with sand. One kernel burned as long as two to three minutes. So, if you had five kukui nuts, you'd have ten to fifteen minutes of light.
The kukui nut kernels were one of the high quality sources of light because a kukui nut contained a high quality of oil.
The wood was used to make floats for various fish nets. The wood of the kukui nut tree was used only if a hibiscus tree was not available.
Roasted kernels were deshelled and pouunded with a little bit of salt to make a relish called 'inamona. If you eat a kukui raw, you can get sick or have diarea.