Virtual Drums

I am still trying to convince my son to go back to piano lessons but he said he is more interested in guitars and drums. I think that the baby  guitar or this virtual drums from guitar center that I see would be a perfect fit for him when he grow up a little bit more. I am sure that when he grow up a bit more, he would be able to  figure out what he really wants to do.  Right now, he is taking gymnastic lessons and I am not sure if he would last in it, he seem to  lost interest in it as time goes.