For the first birthday it's worth buying the toddler something "out of the box", and not a rattle that he will get bored with in a while. Check out the best that manufacturers of toys for children have to offer, and choose something unique!
Arranging a teenager's room may cause more trouble than traditional rooms, and this is because teenagers, in connection with adolescence and the search for their "self" are extremely changeable. Therefore, it is worth betting on minimalism and simplicity with accent elements to allow for quick and easy renovation.