"banshee bungee. but those are like 200$. just go and get a bunch of exercise elastic bands and braid them together. then attach pvc to the end for a handle and voila! homemade banshee bungee."
Ya I tried to make my own bungee slinger, didn't work. I tied a bunch of elastic bands together and it wouldn't stretch far enough. I didn't get speed and it ended up breaking, super dangerous. Its worth it to spend the extra money on the Banshee.