Food Allergies?

Have you ever noticed that when you have a new limitation put on you, ideas for solutions are harder to come by?  I don't know if this is true for everyone, but it definitely is the case for me.  Lately Scooter has been having tummy troubles.  Quite often soon after eating, or even in the middle of a meal he will say his tummy hurts.  When we talked with the pediatrician he said it was most likely a milk and/or gluten allergy.  We have been watching for a while and haven't been able to rule out one or the other.  I finally decided to take a week and cut out all dairy.  Then if the trouble persists try a gluten free week and see how that goes.  I know there are many meals that don't have to have dairy in them, however I now find myself having a hard time coming up with very many.  Particularly breakfast and lunch (that a 5 year old will eat) meals.

Do any of you have suggestions of meals or tips that could help this path of discovery go better?