I've got a tree structure equivalent to folders and files: you can save items and arrange them into folders. The current design is:

```
Folder
  - Item
  - Item
Folder
  - Folder
    - Item

```

When the user is asked to save an item, they can select a specific folder to save in that folder. However, the question is: how do they select to save in the root, alongside the top level folders?

I can only think of two options: 

* Show root item, which can be selected
* A click in the tree area but not on an item deselects all items

Are there any better ways, and, if not, which of those two options would provide the best experience?

EDIT: I don't want an answer which is "do this", I want an answer that says "do this because [...] which is better than the alternative because [...]".