Here is my solution for Event 8. Here we had to go through the hard drive and report which folder was using up all the space on the drive.
1: #First we set the path
2: $path = Read-Host "Which folder would you like to scan?"
   3:  
    4: #assign what we want to get to a variable
5: $myfolders = get-childitem $path -force -recurse | where-object{$_.PSIsContainer}
   6:  
       7: #initiate an empty variable
       8: $mycol = @()
       9:  
    10: #now we loop through all the folders
  11:  
    12: foreach($folder in $myfolders)
  13: {
    14: Write-Host "Processing Folder $folder"
15: #Create and initialize a new variable with two fields Name, SizeMB
16: $myObj = "" | Select Name,SizeMB
  17:    #here we measure the actual size of the folder
    18: [int]$DirSize = "{0:n2}" -f (((Get-Childitem $folder.FullName -recurse -force | `
19: measure-object -sum Length).Sum)/1mb)
20: #add the results to the variable
  21:    $myobj.Name = $folder.Name
      22:    $myobj.SizeMB = $DirSize
    23: #add these to the mycol variable
  24:    $mycol += $myobj
      25: }
      26:  
    27: #present the output and sort by size
28: $mycol | sort-object SizeMB -Desc | format-table -auto
Almost at the end!!