Folding Keyboard Lappable Stand

You can use a piece of 1.75mm filament as the hinge pin. This is made for foldable keyboards like the BOW keyboard (available on Aliexpress) or any of the random rebrandings of them lol.

Fasten the keyboard to the stand with screws reused from the stand that came with the keyboard (I have no idea what size they are but the included ones work just fine lol)