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.
Stephanie flew her Meteor and Bird Of Time, Roddy flew his RC digger, I few the E Sky Albatross and everyone had a jolly good time with the RC plane of their choice on what was the hottest day of...