also, for a friendship idea, my DD hasn't really become friends with an older child (haven't really gone that route) but her closest/most comfortable friend for the past 3 years is 1)equally creatively intense as DD - sometimes even more with her ideas! 2)the youngest in her family and has bossy older siblings, so she could immediately handle any initial bossiness from DD and they actually worked it out between the two of them rather beautifully when they were 6 years old and they remain very balanced with their playing and interacting.