My last project (still working a bit on it, but mostly done) is an E-ink wifi display using some chinese e-ink board and ESP8266, cause you know, it's fashionable.

Here you can find some work I did on PIC & USB in the past, from uni times actually. Played around USB mass-storage devices, also worked on an IDE-to-USB converter. Still the IDE/ATA part missing (just present a zeroed 16GB pen drive) but transferring dummy data using dd under Linux gives me a 160KB/s speed, quite impressing for a PIC!

Some PIC related projects: