Elegance is not primarily about visual appeal, but rather about how simplicity of form facilitates ease of understanding and ease of use.

Here are some of the things that I wanted in the solution (and simultaneously didn't like in the solutions I was able to find on the Net):

• The syntax should be very clean.
• Easily understood by new scripters who haven't worked much with custom objects.
• It should be easy to use for a single instance object.
• It should be easy to add instances (preferrably by copying a code bock.)
• It should allow documentation via comments.
• It would be preferrable if there was no "enclosing" syntax that can be forgotten or clipped.

Below is the solution which fits the above design criteria:

$Animals = @()

$Animals += New-Object PSObject -Property @{
   Name        =  "Dog"
   Domestic    =  $True
   Disposition =  "Happy Go Lucky" 
   Fetches     =  $True
   }

$Animals += New-Object PSObject -Property @{
  Name         =  "Cat"
  # Insert comments where helpful
  Domestic     =  $True
  Disposition  =  "Sultry" # options "Sultry", "Sad", "Angry"
  Fetches      =  $False
  }