Completely Useless Ukulele Tip, 1: Play Same Note on all 4 Strings

This is the first of my new series of short and completely useless ukulele tips. They are things that I ve run across on the ukulele that might be useful, but interesting no less. Tip, 1 shows how you can play the name note A on all 4 strings. That means the same pitch (not a different octave). I wonder if that can be done on any other instrument. Ukulele: Martin OX Bamboo Uke Natural