If you are on a tight budget and can do without the amenities of some of the higher end griddles, you can purchase a family sized electric griddle from a local department store like Target or Bed, Bath and Beyond.
Presto makes several models of electric griddles, ranging from the small 8.5 X 10.5 inch "Liddle Griddle" up to the super-size 18.5 X 23.9 inch "Big Griddle", with several other sizes in between.
You can fully submerge the unit in water, but what makes clean up a real snap with this griddle is that there is no lip around the edge so you can simply scrape off grease or other solids easily.
Depending on the types of meals you plan to enjoy during your camping trip, you may find it useful to take cast iron or lighter weight camping cookware such as a skillet, griddle, and Dutch oven.
Simply place your Presto griddle on a flat area, such as a countertop or picnic table, plug it in to a standard electrical outlet, turn on the temperature control and allow the unit to preheat.