[header] How to make a duct tape stress ball [title] Measure about 4 inches of duct tape. [step] Do this so all your strips are now in pairs. [substeps] At the end of this step you should now have four attached pairs of duct tape strips. 
[title] Attach two strips together by placing one strip one centimeter on top of the other horizontally. [substeps] Do this so you have two rectangles with no sticky sides.