We got a doctor's kit from the toy library which Jack has been very happy with. He has been busily checking ears, testing reflexes ("gently Jack gently"), calling an ambulance, checking blood pressure and listening to chests.

 Richard:  "Doctor Jack doctor Jack, there's an emergency! There's a sandwich that needs eating"

 Jack takes a bite.  Round to Richard. Feeding toddlers is tedious, drawn-out and unrewarding