Drone selection

Fining is a portable drone with 1080p or better video, high quality still images is challenging.

The popular brand DJI's portable version is Spark, but it may be too big to fit in a backpack.  However, there are some compact cases for Spark.

SimToo is much more portable, but its reviews on Kickstarter.com are very poor.

Xiaomi Youpin Foldable HD is also very portable, but it does not have an SD card.  It is said to be unstable and have a short control range.