Lunch Made Easy: Packing Toasted Sandwiches for Lunch

Toasted sandwiches (like a grilled cheese, turkey melt, or grilled frenchman) are the best for lunch!
But... they can often get soggy when packed up in your lunchbox by the time you or your kiddo gets to eat it. Bleh! No one wants a soggy sandwich.
So, how do you keep the sandwich from getting soggy? I'll tell you!