A dongle cap I made for my Asus BT500 since the cap broke off. This fits great and can be pulled out of tight usb ports without issues. This should be compatible with most USB dongle headers however as they typically use the same shield frame. In any case this could be modified to fit your needs. My initial v1 build worked as well but I felt the tolerances were too high and made for a very tight connection. It was secure but didn't allow room for minor movement.

Printed in PLA Matte.