Bugger I think when it's their own stuff they're ruining it's harder, if it's someone elses you can say how would you like it if they did that to your things. DD definitely gets things taken away if she can't treat them properly. I'd have done the same as you, with a little talk about how people had given her those gifts because they love her and want her to enjoy them, not break them. If she doesn't want to play with them properly they can go to someone who will (charity etc), because it's not nice for the giver to do something nice for her and have her break it.