Show report of empty folders in Sitecore Media library

Find-EmptyFolders.ps1

$source = Get-Item "master:\media library"
$readonly = $false;
$result = 
    Read-Variable `
        -Parameters @{ Name = "root"; Title="Root folder"; Root="/sitecore/media library"; editor="item"} `
        -Title "Find Empty Folders" `
        -Description "Select the location you want to inspect." `
        -OkButtonName "Clone"

if ($result -eq "ok") {
        gci -Path $root.ProviderPath | ? { $_.TemplateName -eq "Media Folder" } | ? { $_.Children.Count -eq 0 } | Show-ListView
}