Power Commands for Visual Studio 2010 Extension

If you install power commands, following features can be utilized. 

Format Document On Save
Remove And Sort Usings On Save
Remove and Sort Usings
Clear All Panes
Copy Path
Email Code Snippet
Insert Guid Attribute
Show All Files
Collapse Projects
Copy Class / Paste Class
Copy As Project Reference
Edit Project File
Open Containing Folder
Open Command Prompt
Unload Projects / Reload Projects
Extract Constant
Clear Recent File List
Clear Recent Project List
Close All
Choose which commands you want to use

Please refer this blog for more details

Collapse Selection in Solution: Visual Studio 2010 Extension

A tool to collapse all the projects to parent node:
How to install
1. Navigate to Tools –> Extension Manager, and search for “Collapse Selection in Solution Explorer” in the Online Gallery. Simply download and click Install.
2. Or download it from VS site

More details available at MSDN blog