Microsoft Azure: Find out storage accounts that are good to be deleted - http://manesh.me/2015/02/06/cleaning-up-azure-storage-accounts/

GetUnusedStorageAccounts

# Ref: http://manesh.me/2015/02/06/cleaning-up-azure-storage-accounts/

Get-AzureStorageAccount -WarningAction SilentlyContinue | ForEach-Object {
    $storageAccountName = $_.StorageAccountName
    $storageAccountKey  = (Get-AzureSTorageKey $storageAccountName).Primary
    $storageContext     = New-AzureStorageContext -StorageAccountName $storageAccountName -StorageAccountKey $storageAccountKey
    Write-Host ""
    Write-Host "Storage Account : " $storageAccountName
    Get-AzureStorageContainer -Context $storageContext | ForEach-Object {
        $containerName = $_.Name;
        Get-AzureStorageBlob -Container $containerName -Context $storageContext | ForEach-Object {
            Write-Host $containerName "`t" $_.BlobType "`t" $_.Name
        }
    }
}