I'm sure this is fairly normal behaviour but we don't really know what to do. DD (4) is only interested in playing with DS (2) toys. She has plenty of toys that she enjoys but will mainly ignore them. She could ask for a particular toy and be given it, but then she will immediately drop it and try to play with whatever DS has been given. She has her own toys that she's asked not to share with DS, so we make a point of them having both sharing and non sharing toys. We are fair with them, equally explaining that these are DDs special toys or these are DSs special toys, or these are shared toys so sort out a swap etc. We've done things like DS loves trains and we've let DD have some of her own track and trains to play with but no, she has to play with his (this works vice versa too, DS has some things similar to DD so he leaves her stuff alone). Is this just a phase we have to ride through? Or has someone got any other ideas to try? Thanks