Every time I have had a session at the Fortress, I have used "toys" both by the Mistresses and what I have brought with me. The second time I sessioned, the toys I brought didn't have any effect, so I didn't mention them for my last session, nor did I decide to bring any. In August, I had my third session. When I had my session with Mistress Koi (whom I've always sessioned with), she surprised me twice. The first was that she had kept the "toys" I had left behind the last session we had together and (unlike the previous time) the toys actually "worked well" on me! I'd say if you're thinking about "toys" you might want to bring for a session, ask booking. If you try that toy, it might really add to your experience.