I'm with Arimeh and Traveller. My girls can get like that when they have too many toys and then I know it's time for a cull. They don't need many toys at all. They have much more fun playing outside or helping do real 'grown up' things than playing with toys. I actually think having a lot of toys around stresses them out. They can't find what they want, if they even remember what they own, and it's way too much to ask them to pack up when they've got everything out. So we try to not have too many, and only more simple open ended toys. I find they value what they do have a lot more and look after them better. So, that's what I would do anyway, cull away!!