From warrants, to OTC options, to vanillas, to exotics and beyond. As time goes on the markets grow and expand. Second-generation vol products like vol-swaps, variance-swaps, gamma swaps. One has to think, what is in store for the future of the vol markets? The 3rd generation products. Power options, Log contracts, fade-in option, ratchet options, reset-strike options, barriers, double-barrier options, time-switch options, mirror options, binary options, Asian options, any many many more... I'm curious how this trend moves forward.