Statesboro, GA, USA
It seems to me you're (in essence) asking whether human imagination was intended by God. And seeing that it is capable of bringing joy, I would say the answer is yes. But we also might question how freedom applies to our imagination. It seems that if God gives human freedom (necessitating a willful limitation on God's part), then direct causation of the particular products of our imagination is out of the question. Perhaps thinking of it in terms of divine provision and providence is the better way to make sense of it.