Ikea KLINGSBO glass cabinet shelf riser by brickheiner on Thingiverse: https://www.thingiverse.com/thing:5830388

Summary:
If you have an IKEA KLINGSBO glass cabinet and wanna change the height of some of the shelves, this thing helps you do it. Reaches around the glass plate. Included are 5cm and 7cm risers, just load into any CAD program to add some height on your own - front risers are 1x1cm, back risers are 1x1cm around the corner.