On one of the occasion, as I was visiting my relative, I happened to see an unwanted rack being disposed outside the 7-11 convenience store that had shifted out of a HDB building.
It suddenly gave me the inspiration so I recycled it with some modification by drilling holes and sawing off the unwanted portion, and making it into a frag rack. As for the frag plugs, I built them by using the leftover acrylic waste from my last LED lighting project. I'm glad to share this completed project with reefer here and all comments welcome.