The trikitixa is a small accordion that has been played since the 19th century.
It's usually played at popular festivals.
The txalaparta is a traditional Basque percussion instrument consisting of two supports, either chairs or benches, resting on an insulating material of some kind such as maize leaves and dry grass. The instrument is hit with four sticks, two for each musician, as it's played in pairs.
The txistu is a simple, three-holed flute. It has an infinito wealth of sounds, and it was traditionally made from bird bones. You can now hear it in any corner in Euskadi.