Here is a digital interactive set of Elkonin boxes. All of the elements are set to clone infinitely.
This is made in Lumio, which is not my favorite program but it is what we have for SMART boards. My best advice for this and all Lumio activities is to make a new copy of it each time you use it in case you forget to undo every move before closing it. Or you may have to delete the elements you pulled from the lists. Also you could duplicate and delete the slides in your copy as much as you would like.
