Create (if necessary) & returns a folder on the users desktop of the format yyyy-mm-dd which can be used to export stuff into.

_get_exportFolder.ps1

<#
Create (if necessary) & returns a folder on the users desktop of the format yyyy-mm-dd which
can be used to export stuff into.
#>
function _get_exportFolder
{
  param()

  $exportFolder = Join-Path (Join-Path $env:USERPROFILE "Desktop") (Get-Date -Format yyyy-MM-dd)

  if (!(Test-Path $exportFolder))
  {
    New-Item -Path $exportFolder -ItemType directory | Out-Null
  }

  return $exportFolder
}