Powershell Pipeline - return a new Object, that was created within pipline

I keep running into the same problem again, and i have my default way of handling it, but it keeps bugging me.
Isn't there any better way?

So basicly i have a pipline running, do stuff within the pipline, and want to return a Key/Value Pair from within the pipline.
I want the whole pipline to return a object of type psobject (or pscustomobject).

Here is the way i do it everytime. I create a hashtable at the beginning of the pipline and add key/Value Pairs from within the pipline to this hashtable using the .Add() method.
Afterwards i create a psobject by passing the hashtbale to New-Object`s -Property Parameter.
This gives me the desired result.

Get-Process | Sort -Unique Name | ForEach-Object -Begin { $ht = @{} } -Process {
    
    # DO STUFF
    $key = $_.Name
    $val = $_.Id

    # Add Entry to Hashtable
    $ht.Add($key,$val)
}

# Create PSObject from Hashtable
$myAwesomeNewObject = New-Object psobject -Property $ht

# Done - returns System.Management.Automation.PSCustomObject
$myAwesomeNewObject.GetType().FullName

But this seems a bit cluncky, isn't there a more elegant way of doing it?

Something like this:

[PSObject]$myAwesomeNewObject = Get-Process | Sort -Unique Name | ForEach-Object -Process {
    
    # DO STUFF
    $key = $_.Name
    $val = $_.Id

    # return Key/Val Pair
    @{$key=$val}
}

# Failed - returns System.Object[]
$myAwesomeNewObject.GetType().FullName

This unfortunally dosn't work, since the pipe returns an array of hashtables, but i hope you know now what iam trying to achieve.

Thanks

Not sure if this is more elegant but just another way of doing it, this uses an anonymous function so $ht will no longer be available after execution, and casts to [pscustomobject] instead of using New-Object:

[pscustomobject] (Get-Process | Sort -Unique Name | & {
    begin { $ht = @{ } }
    process {
        # DO STUFF
        $key = $_.Name
        $val = $_.Id

        # Add Entry to Hashtable
        $ht.Add($key, $val)
    }
    end { $ht }
})