Please excuse the multiple posts, my machine doesnt scroll well at times and I couldnt just edit to add.
I also have special interest in the topic of presentations, whether informal and small circled or entity promoted.
I would like to respectfully disagree with putting the toad in a container of water, however shallow, when traveling or moving or displaying but to use a bed of lightly dampened sphagnum instead. It is less stressful. After your time "on the road" please make sure he can access shallow water feature to sit in at his own volition in his environment, and leave him in peace.
At this time in the world empathy towards other life forms is more important to teach than any single natural history fact, or what an animal feels like in our hands.
The belief that people, especially children cant care and learn about anything unless they can handle it, I have found to be a false assumption. It does not attempt to reach through to a greater potential of understanding. It may require a more dimensional approach, as well as more energy but I can tell you I have seen it achieved.