I remember those! I could never figure out how to do it so someone made them for me. They were always made from the green Wrigleys wrappers.
I'm so glad to see instructions posted, now my dd can make them too.
I remember them and still have a huge one I don't have the heart to throw away I was trying to make a world record length. I unroll it and see it has been broken apart in places. I made stick men, coasters for cups and other things out of scrap paper I cut to the gum wrapper paper size and folded and hooked together.