I got tired of my cellphone charger and cord becoming a tangle in my backpack when traveling so I looked over models here but didn't quite find what I was looking for.  Although I did find a few that inspired my final design.

My design should be self explanatory.  It holds my favorite brand high speed charger and a 10 foot heavy cord.

This design is for a 0.8 mm nozzle, using PLA.  On my Creality V3 S1-plus takes 1 hour and 24 minutes to print

Two Velcro straps are needed to secure the charger and the cable into the holder as seen in the photo.

There are features added for 1.7M x 5.0 panhead screws, but you could also just glue it with your favorite adhesive.