My son wanted to be able to hook his Backpack to the back of his desk chair at school.

Printed in PETG you can slip the handle through the slit and then super glue it closed so it won't come off the bag. It will work without the glue but won't support as much weight.

It lasted for almost 2 years before he broke it by having too much weight in his bag. I was impressed it lasted as long as it did. It routinely held at least 15-20 lbs.