Materials
To make this glider you need:
1 x balsa piece of 3.2 x 76 x 914 mm (1/8" x 3" x 36")
2 x balsa smaller pieces of 3.2 x 10 x 914 mm (1/8" x 2/5" x 36")
Hot glue
Metal (or plastic) ruller
To make this glider you need:
1 x balsa piece of 3.2 x 76 x 914 mm (1/8" x 3" x 36")
2 x balsa smaller pieces of 3.2 x 10 x 914 mm (1/8" x 2/5" x 36")
Hot glue
Metal (or plastic) ruller
However, a drone must carry some useful load and it would be much heavier than such a light glider, so it would lose altitude quickly while gliding.
Moreover, even a drone that is not intended to go far away, which could reach a nearby destination if launched from a big height or by towing, would still need a battery, some motors and control electronics to control the direction of flight, which would also increase its weight.
A drone that would be able to go very far by gliding would need a lot of sensors and very sophisticated control to take advantage of the air currents in order to avoid losing quickly the altitude and crashing down.
An ordinary drone with flapping wings could glide only for very short time intervals, after which it would have to use powered flight to recover its altitude. Even so, its control would not be easy for avoiding the risk of flight instabilities at the transitions between wing-flapping and gliding.