I'm pretty sure GoldCircle and Oxon Flyer still have a collection of bmi pens and notepads to give away as a final prize - we didn't quite manage to hoover them all up at the last London 'do'.
Although admittedly cocking a bmi finger in the general direction of T5 is probably an infinitely more satisfying and longer lasting experience (well, judging by how long my pen kept working, anyway!).