This is a water bottle/drinks bottle holder that can be screwed to a wall or hung with the hook. Originally designed to clip on to the metal bars of a childs metal captains bunk bed. The holder could be screwed straight into a wall or other vertical surface though.

Holes are designed for M3 bolts.

Creality

Ender 3

No

No

0.2

40%

Print the cup holder upright on bed with minimum 4 walls for as much strength as possible. No supports required. Print the hook (if you need the hook) separate. Print this part on its side on the bed with similar settings to the main cup holder for maximum strength.