Clips & cages = toshi doubles; sure expensive but they last nearly forever and why compromise when foot retention is so important for fixed?
Straps = scrod's retrogression straps. (consult above for links) Haven't had my own pair to grace my bikes but I've heard only good news about them lately. Plus they're cheap compared to what I have, Hold Fasts which are great aswell if you're willing to pay premium for premium, as opposed to the retrogresion one's which are described as premium but for bargain bin price.