TextInBox.ps1

# https://en.wikipedia.org/wiki/Box-drawing_character

$lightBox = @{
    vert = [char]::ConvertFromUtf32(9474)
    horz = [char]::ConvertFromUtf32(9472)
    leftup = [char]::ConvertFromUtf32(9484)
    leftdown = [char]::ConvertFromUtf32(9492)
    rightdown = [char]::ConvertFromUtf32(9496)
    rightup = [char]::ConvertFromUtf32(9488)
}

filter in_box {
    [string]$str = $_
@"
$($lightBox.leftup)$($lightBox.horz*$str.Length)$($lightBox.rightup)
$($lightBox.vert)$str$($lightBox.vert)
$($lightBox.leftdown)$($lightBox.horz*$str.Length)$($lightBox.rightdown)
"@
}

"text in a box"|in_box