300 mm Cord winder with carabiner hook attachment.
PS: I had to compress it to fit my Prusa Mini+ (180 mm), so the pictures look a bit stubby. I have my dogs leash wrapped around it.
The model is identical to the original 300mm one, except the carabiner hook attachment, and can be scaled to your needs
The author remixed this model.
Has a 10 mm wide and approximate 30mm (curve on hook starts at 25mm) long hook at the top for attaching a carabiner hook.