Seems like I remember someone making that suggestion a while back........a certain Wildcat umm Smokey and the Bandit umm oh that's right Crimson Tide fan.
My DW found an idea on TheYummyLife.com,
http://www.theyummylife.com/Instant_Oatmeal_Packets for oatmeal. Single serving ziplock baggies with oatmeal, pinch of salt, powdered milk and then any of your favorite addins such as cinnamon, brown sugar, and dried or dehydrated fruits and nuts such as raisins, apples, blueberries, strawberries and the such. Dump in a bowl, add water, microwave for a couple of minutes and instant hot breakfast. Throw it in a Styrofoam cup, plastic spoon and off you go to the parks. When finished just throw the cup and spoon away.
The DW makes up several different varieties of this before we go. Also makes a nice late night snack.