The most obvious technique is perhaps to add a line break after a pipe, for example:

Get-Process |
    Where-Object Name -match 'po?w(er)?sh(ell)?'

This is useful for long pipelines, but may be counterproductive for short pipelines. For example, the following short pipeline ends with ForEach-Object. The statement is not necessarily long enough to need extra line breaks:

Get-Service | Where-Object Status -eq Running | ForEach-Object {
    # Do work on the service
}