An unstrung and useless piece of cold wood, unless you happen to be dead.
A tiny marble cherry with an amber heart inlaid. One of the Lolliful Avenger's most devastatingly effective weapons.
A small, primitive village has yet to discover fire, which is a good thing because there are highly flammable (but not otherwise dangerous) gasses in the air. The heroes, blissful in their ignorance, don't know that and think it a wonderful idea to show the locals open flame.