You mean the guys the company laid off last week?
What at first seems an unlikely pairing, I think, given the right "relational config" in moment could actually end up working pretty well. Seems there's plenty opportunities for such a coupling to have many fruitful outputs for both parties.
Money. Charging the higher end of typical consulting rates. That's your competition.
It's OK to want to help the young engineers, it doesn't mean that you shouldn't charge the company while you are at it. It would be foolish to do it for free, you effectively wouldn't do it for free even if you still worked there.