A Hanger

A full sized hanger.
The design has tight tolerances, so it doesn't need to be glued. I recommend printing a test print to see if your filament/printer will result in parts that will fit together.
It is likely you will need a hammer or similar to tap the parts together.
The result will be a hanger to replace similar sized commercially available plactic hangers. These are quite strong and will happily hold even quite heavy clothing up.