I've remixed and add the additional top and bottom wedges to make the stand designed by Lichty more stable. Each parts, it can be printed separately from the main stands. The length of the wedges was designed to make the stand fit for Macbook air original 13 inch design (mine is Macbook Air M1).
They are able to print using the universal 3d printer base with 235cm*235cm but you need to orientate to the edge of the print base as shown in the picture attachment to be able to slice and print.

On the the bottom wedge, it's quite tight, you need a little push to force it to the stand space.