If we can find them, we will get lots of answers to haunting questions.
1. Where is Sirius's Motorbike?
2. Where is Dumbledore's wand?
3. Where is Charlie Weaseley?(he is the only Weasley who is not in the scene)
4. Where is Ollivander and why he is missing? (Something to do with wands)
There are so many others, just think about it.