Diagnosis: Peanut Allergy {A New Season in Life}

Our son recently went in for his two year well child visit.  The visit went great!

We did have a couple of concerns...

No. 1...concerning behavior and tantrums.
Diagnosis...{after a slight chuckle from our Dr.} it turns out we have a very normal 2 year old boy and there should be no concern from us at all.

No. 2...concern of possible peanut allergy.
{long story short...almost a year ago, W got a hold of a small piece of peanut butter granola bar and put it in his mouth - we were able to remove the granola bar from his mouth before he could actually eat it but immediately swelled in the face and broke out in hives}
Diagnosis...

I think I had convinced myself that his reaction a year ago was "just a fluke" and that the test would come back with an "all clear".

Unfortunately things didn't go that way and we have now entered a new season in life.  A season of learning...peanuts are in many more things than we thought they were.  A season of being aware...a hungry, growing two year old boy can have the tendencies of a dog {eating anything from anywhere}.  A season of being alert and making "changes"...

Any tips on living with a "peanut allergy child" when you have other children who love PBJ's and other forms of peanut products?