Export and Import Variables between PowerShell sessions (naive)

Export-Variable.ps1

# function Export-Variable {
    [CmdletBinding()]
    param(
        [ArgumentCompleter({
            param($CommandName, $ParameterName, $WordToComplete, $CommandAst, $BoundParams)
            $Current = $BoundParams.Name
            (Get-Variable).Name.Where({$_ -like "*$($WordToComplete)*" -and $_ -notin $Current})
        })]
        [Parameter(ValueFromPipeline, ValueFromPipelineByPropertyName)]
        [string[]]$Name,
        
        [ValidateRange(1,20)]
        [int]$Depth = 5,
        
        [string]$Path = (Join-Path $env:Temp "ExportedVariables")
    )
    process {
        switch ($PSBoundParameters.ContainsKey('Name')) {
            $true {
                foreach ($Variable in $Name) {
                    Get-Variable -Name $Variable | %{
                        Write-Verbose "Exporting: '$($_.Name)'"
                        $_ | Export-Clixml -Path "C:\Temp\Variables\$($_.Name).clixml" -Depth $Depth
                    }
                }
            }
            $false {
                Get-Variable | Out-GridView -PassThru | %{
                    Write-Verbose "Exporting: '$($_.Name)'"
                    $_ | Export-Clixml -Path "C:\Temp\Variables\$($_.Name).clixml" -Depth $Depth
                }
            }
        }
    }
# }

Import-Variable.ps1

# function Import-Variable {
    [CmdletBinding()]
    param(
        [ValidateScript({
            if ((-not (Test-Path $_ -PathType Container)) -and (-not (Test-Path $_ -PathType Leaf -Include *.clixml))) {
                throw "Path must be to a folder or *.clixml file"
            }
            $true
        })]
        $Path = (Join-Path $env:Temp "ExportedVariables")
    )
    foreach ($Var in Get-ChildItem $Path -Filter *.clixml) {
         Write-Verbose "Importing '$($Var.BaseName)'"
         Set-Variable -Name $Var.BaseName -Value (Import-Clixml $Var.FullName).Value
    }
# }