PowerShell Christmas Prompt

PSChristmasPrompt.ps1

<#
display a colorful Christmas countdown prompt

[♫♪Christmas in 18.15:22:08֍♦] PS C:\> 

This should work in the console with a True Type font and
the Powershell ISE

this prompt requires a TrueType font
you would put this in your profile script so that it
only runs in December 1-24

#>

if ((Get-Date).Month -eq 12 -AND (Get-Date).Day -lt 25) {
  #load the Christmas prompt  
  
Function Prompt {
    #get current year
    $year = (Get-Date).year
    #get a timespan between Christmas for this year and now

    $time=[datetime]"25 December $year" - (Get-Date)
    #turn the timespan into a string and strip off the milliseconds
    $timestring = $time.ToString().Substring(0,11)

    #get random string of decorative characters
    $myChars = "♫","♪","♦","*","֍"
    $front = -join ($myChars | Get-Random -count 2)  
    #-join (14,15,42 | Get-Random -Count 2 | Foreach { $_ -as [char] })
    $back = -join ($myChars | Get-Random -count 2)
    #-join (14,15,42 | Get-Random -Count 2 | Foreach { $_ -as [char] })
    $text="[{0}Christmas in {1}{2}]" -f $front,$timestring,$back

    #get each character in the text and randomly assign each a color
    $text.tocharArray() | ForEach-Object {

    $i = Get-Random -Minimum 1 -Maximum 20
    switch ($i) {
      {$i -le 20 -and $i -gt 15} { $color = "Red"}
      {$i -le 16 -and $i -gt 10} { $color = "Green" }
      {$i -le 10 -and $i -gt 5}{ $color = "DarkGreen"}
      default {$color = "White"}
    }

    #write each colorized character
    Write-Host $_ -nonewline -foregroundcolor $color
    } #foreach

    #the function needs to write something to the pipeline
    
    " PS $($executionContext.SessionState.Path.CurrentLocation)$('>' * ($nestedPromptLevel + 1)) "

} #end function

} #If December

See https://jdhitsolutions.com/blog/powershell/6252/your-christmas-powershell-prompt/ for more details.