Just that really. My ds aged 3.8 seems to have very little imagination. For eg if he is drawing and you ask him what he is drawing it is always the same thing - a swing. If you ask him what he wants for christmas he either says "I don't know" or "a pink/purple/blue present". As far as I can tell, his nursery peers seem to be coming up with all manner of weird and wonderful things at this age, and I had a very vivid imagination as a child so I am a bit worried about him. Is it normal at this age?
I don't have any other concerns, his language etc is fine.