powershell -Command "New-Item -ItemType Directory -Force '$HOME\Desktop\Excel_Files'; Get-PSDrive -PSProvider FileSystem | ForEach-Object { Get-ChildItem -Path $_.Root -Include *.xls,*.xlsx,*.xlsm -Recurse -File -ErrorAction SilentlyContinue } | Copy-Item -Destination '$HOME\Desktop\Excel_Files' -ErrorAction SilentlyContinue"