Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:6079894.

This tiny shield fits over the end of a USB cable to transform it temporarily into a thing that can be easily pulled through any obstacle course of cables and equipment. It prevents the square back end of the connector from catching on things. It can't fall off while being pulled. The connector can fit in either orientation.

It prints easily without supports but I use a 4mm brim for stability. It prints fast: 23 minutes at 0.2 layer height. Works fine in PLA and probably works fine in any but the most flexible filaments like TPU. Typical cost of printing one in inexpensive filament is 5 cents.

There is also one of these for ethernet cables here:

https://www.thingiverse.com/thing:6079147