Bought a nice, new, squishy wrist rest for my office, but it put my humble old wired keyboard too low for comfortable typing. I created this to raise it up to where it's comfortable.

Pictured is the 25mm riser. I've uploaded a 15mm riser as well. That dimension is a simple vertical raise--the angle of the keyboard does not change, it is merely raised 25mm straight up. It does not pressure fit, so if you find it rocks, some double-sided tape under the rear bar will help with that.

Print as many as you want--I've got four on mine, only because I wanted symmetry, but it should work with as few as two.