Sunrod

This 1-foot-long, gold-tipped, iron rod glows brightly when struck as a standard action.

Source Core Rulebook

It sheds normal light in a 30-foot radius and increases the light level by one step for an additional 30 feet beyond that area (darkness becomes dim light and dim light becomes normal light). A sunrod does not increase the light level in normal light or bright light. It glows for 6 hours, after which the gold tip is burned out and worthless.

The Equipment Trick feat provides a number of options for using this item in combat.