I bought this adapter too. Still waiting for it to arrive though but in the meantime I bought a few 2x2 Lego blocks
I intend to use these blocks by attaching them to accessories such as a spotlight like in the following picture (which in the photo is connected to the Tello using other means)
Once any accessory is attached to its own block, it can be clipped onto the Lego adapter easily allowing the interchange of accessories while at the same time raising them clear of the props