Source for paper-thin usb ribbon cables?

Hardware
1

Hello,
I have an imp on the April board that I’d like to power via USB, however, it will be sitting inside of a tightly sealed box. I’ve been trying to find a source for those internal cables (and connectors) that you see inside of phones and laptops, but haven’t had much luck (something like this http://www.bhphotovideo.com/c/product/1053706-REG/dji_part56_output_connection_cable_for.html). Does anyone have any suggestions on where to find something like this?

Thank you!
Pat

2

Have you considered a Qi wireless charging setup, which would avoid having any cables through the case?