DD1 is 3.9 and DD2 is a baby - just starting to grab things from DD1 and to sit playing with toys. I guess it won't be long before she's on the move, either.
Pretty much all the toys in the house belonged to DD1 originally. She was very keen to give the baby all her old baby toys, had happily let the highchair go etc. I'm starting to run into trouble with sharing, though. We have a musical toy which is suitable for both the baby and DD1. It also has lots of parts (bells, a shaker, a drum etc etc) so it can be easily shared. DD2 was happily playing with part of it. DD1 invoked 'mine' and tried to take the whole thing away. The thing is, it IS DD1's - but only because she was here first. What do you say? I made DD1 share, but it wasn't a comfortable experience!
I realised that I was expecting DD1 to share many of her bigger toys as DD2 gets older - things like lego, train track, dolls house etc. Is that a fair expectation? Especially for the much-loved dolls house? What have others done? And how did it go?!