Aerophones
These instruments fit into the Aerophone category of the Hornbostel-Sachs Classification System.  This means that air is the primary vibrator.
Panpipes from Papua New Guinea.

These 3 instruments all have similarities.  They are made of bamboo and the pipes are tied together with string.

They are played by blowing across the opening of each pipe to make a different pitch.  One end of the pipes are closed.

These instruments were purchased at a market in Goroka, Eastern Highlands Province, Papua New Guinea.  I do not know specifically when and how they are used.

The classification is 421.112.2.
Ocarinas from Papua New Guinea

These ocarinas are all the same in structure but differ in decoration and level of craftsmanship.  They are between 3 and 5 inches long.  They are made of clay.  They have 2 finger holes.  Sound is made by blowing across the opening.

I purchased these instruments at the market in Goroka, Eastern Highlands Province, Papua New Guinea.  I do not know any other details of their context or use.

The classification is 421.221.12
Ocarina - front view
Ocarina - bottom view
Lakota flute

This instrument is 2 feet long and 1 inch wide.  It is made of two different kinds of wood.  The head is carved to resemble a bird.  It has 7 finger holes.

I purchased this instrument from its maker, "Lakota George", who lives in Northfield, MN.  He is a member of the Lakota Native American tribe.

He described that this instrument would be used in ceremonies for healing and purification as well as other purposes such as courting.

The classification is 421.221.12
Pig calling flute from Papua New Guinea

This flute is 2 feet long (including the feathers) and 3 inches wide.  It is made of bamboo and bird feathers.

It is held sideways and is played by blowing across the hole near the top. It is held with the left hand and the right hand covers the open end opposite the feathers.  The right hand moves to open and close the opening enhancing the variety of sounds possible on the instrument.

I bought this instrument at the market in Goroka, Eastern Highlands Province, Papua New Guinea.  I was told that it is used to call pigs, who are very important to the people in the area. 

The classification is 421.121.312
Closeup of carved head of Lakota flute
Back of pig calling flute