Well, that'd be a good idea, for different races / species / factions using different items.
I guess NCR could use a salvaged PDA of some sort (I know I got this from a game, I just forgot which) as a Pip-Boy.
Caesar's Legion... that's a tough one.
From the Fallout wiki -
Oddly enough, the Legion has huge amounts of Stealth Boys.
They could use a modified Stealth Boy as a Pip-Boy. Or use a bloodied Pip-Boy, stolen from a Wastelander they have crucified.
I guess Super-Mutants could have different Pip-Boys depending on their intelligence (Harry vs Lou) I guess the Harry variety could use a rock with very poor writing, and the Lou variety could use a Unity Pip-Boy (seeing as how most of the intelligent ones are pure humans).
I guess the same could go for the Ghouls (if they are the Necropolis type ghouls or the wastelander ghouls) so the Necropolis ghouls would have a disfunctional Pip-Boy, and the wastelander ones would use a backpack.
But, I suppose any race / faction could get their hands on a Pip-Boy, it just depends on their connections, relationships, etc.
As long as we can get a Pimp Boy 3 Billion!

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