Add-Type -AssemblyName System.Windows.Forms

$notify = New-Object System.Windows.Forms.NotifyIcon
$notify.Icon = [SystemIcons]::Information
$notify.BalloonTipIcon = "Info"
$notify.BalloonTipText = "Test worked"
$notify.BalloonTipTitle = "✔"
$notify.Visible = $true

$notify.ShowBalloonTip(3000)

Start-Sleep -Seconds 5
$notify.Dispose()