Wireframe Blimp
This model is designed to host a balloon inside the frame. Fill with helium. 2 liters of helium (1 liter to 1 gram to float) and the model is 1.92 grams.
This design is for the Take Flight Challenge.
Still working on the model but ran out of time for the challenge.
YouTube Engineering Video: https://www.youtube.com/watch?v=cH0TQNaPjVs