Small camping clothesline to roll up. 
I have attached a carabiner to both the eyelet and the line itself.

The spool fits approx. 30m of paracord or similar cord.

The following materials are also used:

• 1x ball bearing 608zz
• 4x cylinder head screw with hexagon socket M4x16
• 4x hexagon nut M4

Printed in PETG.

Carabiner from here: Camping carabiner von Holuboy | Kostenloses STL-Modell herunterladen | Printables.com