Blum Kitchen Hinge Spacer - can adjust the size (height) to suit your requirements. Original idea on thingiverse, started with a blank canvas to learn Openscad. Should be fairly easy to edit to increase the height. If you adjust the width / depth you'll need to move and adjust the screw hole locations to match.

Printed mine in PLA with 60% infill and 2 walls for a really strong part.