Kokiriko, or binzasara is traditional percussion instrument mostly popular in japan. It has two handles and is played in japanese dances and folk music. Sound is very similar to washboard.
Hitting a bb2 - mf - on a ghanaian marimba. The resonators didn't buzz much on this hit. More detail:14-key pentatonic marimba, handmade in ghana with kiln dried twenaboa keys and gourd resonators.