Toys are always hers. I tend to buy or make toys specifically for one girl, and will not use them on another. If she leaves, she may take the toys with her, otherwise they are destroyed. Partly it's for health reasons, though toys are always sanitized after use, but partly it's because I like to stay with things that give a girl the most pleasure in our play (toys are never used in punishment), and like to customize them to colours or shapes or sensations that bring out her best responses.
Even suspension gear is individual - not wrist suspension, but suspension boots are always fitted to her calf and foot to give the most secure and comfortable ride possible - I like long suspension sessions - I don't need or want the girl distracted because of poorly fitting or uncomfortable equipment - I want her focused on what I'm doing to her *weg*.
There have been exceptions to the the individual toys policy - but that depends very much on the girls - true slave sisters may share (with appropriate sanitary considerations). But even there, they have their own toys as well. There's something special, though about a girl presenting her favourite toy to be used on her sister.