Toby was trying to be happy. He honestly was. But ever since the cancellation of Quidditch was mentioned, it had been sort of... difficult. And he couldn't even fly to deal with this whole situation, because that was apparently just as dangerous.

But he understood. He understood why it had been cancelled, and why this was a safety thing, but that didn't make Toby any less upset about it.

Still, it wasn't right to let all that interfere with lessons. Not if he could help it. Though... that was easier said than done.

Okay, so... strength potion, right. Toby got out his wand and pointed it at his cauldron. He muttered 'scourgify' and 'tergeo' at the inside of it, effectively cleaning it. Then, using a beaker from his potions kit (which he also cleaned with magic), Toby measured out one litre of water to add the the cauldron... and then another. Once he had the required two litres, Toby added both unicorn tail hairs, one at a time.

Glancing around him, Toby couldn't help but catch sight of the the first years nearest him, and he addressed his next comment to them.

"Does anyone need help with any cleaning charms?" he asked them. "You're gonna need them a whole lot in this class."