The Gee Willikers is easy to build and fly.
You can download the drawings of this RC aircraft model, print them, cut and assemble an airplane model for the evening.
The Gee Willikers has flown, and goes well on two cells outdoors; have not tried it from water yet, still 'splash-proofing' the electronics as well as I can.
Heres the unboxing and overview of the ZOHD Dart 250G, I have got the FPV PnP version here, with FPV camera & Kopilot Autopilot and very much look forward to putting it together