I just stumbled across this community because of my recent hobby work troubleshooting (and head scratching) USB3 port modes on a Macbook Air under Asahi Linux. I've contributed nothing to this community so I should be excluded from your giveaway. I can absolutely see the need and how useful the BLE caberQU would be for what I'm working on, so I'll be looking into it more anyway.
Just for fun, here's my "weirdest cable" contribution. It's probably complicated enough to be excluded as a cable though. Back in the 1980s dot matrix impact printers were the most common printers that existed. For IBM PCs they would use the IEEE 1284 parallel cable with a D-sub 25 male and Centronics 36 pin connector. This is all well and good if your computer sends printer traffic parallel on and using IEEE 1284. However, if you're using a Commodore 64 in 1983, it has neither IEEE 1284 or parallel ports! Enter the parallel to serial converter cable!
There were a number of brands at the time, here's a picture of one:
The output to the printer is that 36 pin ribbon cable with the Centronix 36 pin connector. The input is the 9 pin DIN connector that plugs into the Serial bus (proprietary serial version of IEEE-488), but the interface required power, so there's also a 1 wire connector (the white connector pictured here) to a PCB edge connector that plugged into the Datasette port on the Commodore for the 5v+ needed to power the interface electronics. I used one of these for years when I younger to use a superior PC 9 pin printer than the 1 pin Commodore printer we had originally.
I see these old printer cables as the great grandfather to today's FTDI cables where there is interface logic built into the cable (albeit a much smaller package).
