The saz (or bağlama) is an instrument of middle-eastern origin. Naming conventions vary a bit but this larger saz is often known as a bağlama. I also have a smaller one known as a cura saz.

The balalaika is an instrument of Russian origin. It has 3 strings with a typical tuning of E4, E4, A4.

The cura saz is an instrument of middle-eastern origin, especially the areas around Turkey. Naming conventions vary a bit but this small saz is often known as a cura saz. I also have a larger one known as a bağlama saz.

The kora is an instrument from West Africa with the body made of a gourd covered in animal skin. It has 21 strings and has similarities to a harp in that strings are not fretted, however playing techniques are very different to the harp. This one has guitar tuners rather than the traditional leather rings.

I think this is a lokanga voatavo (lokango voatovo) or tzetze or zeze which is a small African instrument. This one has 3 strings on a stick attached to a gourd.

The oud is of middle-eastern origin and is a precursor to the lute. This one has 11 strings arranged in 6 courses. Common tunings are D2, G2/G2, A2/A2, D3/D3, G3/G3, C4/C4 or C2, F2/F2 A2/A2, D3/D3, G3/G3, C4/C4. Unlike lutes ouds are fretless.

The phin is an instrument from Thailand. It has 3 strings with a typical tuning of E A E. Like dulcimers it has diatonic rather than chromatic frets.

The pipa or Chinese lute is a traditional Chinese instrument with four strings. Typical tuning is A2, D3, E3, A3. One of the tuning pegs on this pipa is broken and needs repair or replacement.

The sanxian is a traditional fretless 3 string instrument from China with snake skin used as the head.

The sitar is an instrument of Indian origin.

I have forgotten what this is so will have to find out. It is a single string instrument for use with a bow.

Possibly a rebab or rebaba which do have a wide range of shapes depending on which country they are from.

Looks a bit like an ektara or tumbi but has the second resonator at the back.