The blow mold skeletons stand at 5 feet tall and are made from cheap plastic. By inserting a little tab into a hole in the next bone, they can be popped together.
When sewing the joints together, a hole is poked in the hand of the skeleton and some picture hanging wire is used for threading through the hand and out the tab. It is then inserted through the other bones until what hang out of the shoulder end of the top bone in the arm are about 2 or 3 feet. It is then tied off around the hand as shown below.