Help finding accessories and small pieces

My daughter 4 came to me yesterday heartbroken because she cant find the little parts and accessories that comes with some of the barbies. Not the clothes as such (shes got the closet that comes with all the clothes shoes etc) but the little cutlery sets and foods and plates for her barbie dream house that the dolls can hold and the plates clip into the countersinks in the tables. Shes also at some point had a barbie that had a laptop/computer that ruined her doctor barbie scenario today. Im 29M and remember playing with my star wars toys and the heartbreak she has just now. Is there a store or website that sells this stuff official or otherwise? Thank you in advance