There are also variations you can play with if you like to tinker. What about building a bomb/parachute drop; installing a cheap wireless video camera system or just a still camera, installing a simple smoke system, the ideas are endless.
If budget permits, there are also different types of planes, bipes, fun flies, combat, electrics, even gliders. Each has a different spice to add to the hobby and these are just a few examples.
So long as you are having fun
Nuker