Boomerangs
Among the unique, hard-to-find gifts one can give is, advisedly, the boomerang. It is this piece of V-shaped wood that flies when thrown with skill. It originated from the Australian aborigines and used by them in hunting for animals. Such a small group of people can logically make only a limited number of products, so an authentic boomerang is an unusual object indeed.
Not many people have seen an actual boomerang, much less throw it skillfully. Additionally, the source may be deep in the Australian outback which makes the thing rarer still.
A boomerang is actually all at the same time a toy, a weapon, a hunting implement, an object of art, and a product of superb craftsmanship. You can play around with a boomerang and not be called ‘childish’; use it to club your opponents in the noggin’ or cast it to put them on the defensive, ducking for a precious moment while you run away.
A poorly made boomerang will not fly, so crafting it needs skill, experience and an eye for balance. Boomerang makers are highly skilled in the craft, as the object demands for a certain heft and equilibrium in order to whirl and make that roundabout trajectory that gives it its name. In other words, it is not something just anybody can make and make good.
Finally, one element that makes the boomerang the perfect unique gift for a person who has everything but, or for hard-to-please people, is that it cannot be thrown away very easily. It always comes back to the thrower to remind him it is a rare and very unique gift. It is that unusual.