A timesaver in using NuGet packages is using the local NuGet cache to install packages to Visual Studio Projects after the package is downloaded first time from NuGet.org.
Everytime we download a NuGet package, it is stored locally in C::\Users[username]\AppData\Local\NuGet\Cache.
Scott Hanselmann has a great post on using this technique to install NuGet packages from local cache once the package is downloaded first time from visual studio.
In you case want to create a local repository which you can access from multiple PC’s, you can create a local directory and configure it is a source package in Visual studio. In this you can access all your local repositories from a central location. More about this can be found at https://joshilewis.wordpress.com/2012/01/13/creating-a-local-nuget-cacherepository/
These are great time savers in adding NuGet packages repetedly to project in visual studio. In case you have slow internet connection, this is a godsend.