Test number 1, we shall see if it works.

Added insets for little rubber feet that come in furniture protector packs or cabinet door bumpers.

Test number 2, widened a bit, made clearance for the feet on my HP elitebook, and increased the pads at the top to hold the computer more upright.

Test number 3, (called HP desk stand test 2) was a complete re-build in tinkercad, I didn't have access to my calipers so its not accurate just a design testing idea.