Chilab
this Yuuzhan Vong piece of bio-technology was a worm-like creature designed to crawl into a warrior's sinus cavity and lodge itself there. It was bred to have large memory capacity despite its small size, and recorded everything its user saw and hear by connecting directly to its neural network. When forced to detach itself and expelled through the nose, the chilab could be recovered and its memories stored in bio-computers for later review and replay.