This is a double or triple laptop stand.

This is a simple remix from the original: https://www.thingiverse.com/thing:3614685

*_top part requires some support.

Each part can be safely printed on a Ender3 and can be screwed in place using a 3x8mm wood screw or 3x10mm with 2 mm chopped from the end (this will provide more grip).

Or can be glued.