Lots of stuff. Lots and lots of stuff to be written down, which was exactly what he did. He was so busy writing it down, that he didn't even balk at the salamander blood part. Because NOTES.

As Toby was a boy who didn't automatically think of things as having a use to hurt other people or whatever, he wasn't immediately curious as to what the potion was for. Just considered it to be something to make a cool show, you know? When the professor asked the question, he stayed quiet for a few moments before throwing his hand up into the air, sudden inspiration having struck.

"Maybe for like intimidation or something if you're under attack, for when you can see them and they can't see you," the Hufflepuff suggested, tilting his head and looking straight at the man's face again. "I mean it's not exactly a good idea to go bounding into a situation where you thing there's a dragon or a person that can really breathe fire, so it gives you time to make a defence or escape if you can."

Toby wasn't sure. He was just wildly speculating and trying to be creative. Was it working?