More or less from scrap

Niederegger El-Ukulele

Bamboo (neck), Niederegger tin, copper wire from an old converter (for the pickup)

Cigar Box Ukulele

Bamboo, CigarBox, parts from an old Saxophone, bolts.

Two-string bass guitar

Two-string bass-guitar

Bamboo (neck), washbowl, norwegian fishbowl tin, copper wire from an old converter (for the pickup)

Four-string kalimba guitar

Four-string guitar

Bamboo (neck), parts from an African kalimba, copper wire from an old converter (for the pickup)

BamBoom

Made of a bamboo bought from a garden center. The diameter of it was about 12-13 cm (5 inches).
Spesifications: bluetooth, pre-amplifier and amplifier. 12 v dc

Coconut

Coconut, lens from an old camera. Spesificatons: Bluetooth, amplifier, Lithium-battery, charging by micro-USB, inspection window.

Redwood Speaker and Amplifier

The redwood was remainings from production of carports. The remainings were used as firewood, but I manage to get hold of some.