I've started a GoFundMe campaign to get a USB VID.

If you google around, you'll find a couple of avenues to obtain product IDs for open hardware projects. I've inquired of both of them and the silence has been deafening. The other avenue is to use Microchip's VID, since I'm using Microchip chips. Unfortunately, they haven't fixed their sign-up widget since acquiring Atmel, and they're not answering their e-mails either.

So I have no choice but to "squat" on 0xf055 for the short term and try and raise money to obtain a legitimate USB VID longer term.

I actually hope that this campaign gets enough notoriety to put some pressure on the USBIF to solve the problem of USB VID/PID for small manufacturers and makers. That would be a better solution than all of us trying to raise $5K to get a range of 65,536 PIDs of which we will each use a tiny fraction.