You have a great beginning plot-line to a spooker movie there.
* edited * 8 year old son says he see's a shadow figure carry things both funny and bad things while just standing there. Is this possible??
I strongly suggest you seek psychiatric counseling
A shadow figure can only carry the shadows of things.
You speak more as an eight-year-old than one who has an eight-year-old son.
Return to reality.
A shadow figure is following your son and what BOTHERS you is that the shadow figure is CARRYING something?!?!?!?
Research shadow figures, find a medium.
I would have a priest bless your house and your son.