Building a large pad holder

[Dborns]

Brand new on the forum. Two years into KM and loving it. I've been collecting equipment to workout at home, but need an idea for a pad holder. I've got three different heavy bags for striking, but want something to mount a rectangular pad for kicking and kneeing. I need something that has a little give to it as if it was on springs. I thought about building some sort of frame to hang it from but wouldn't have annudea on how to start, what to use, etc.