Nany X - 22g Ultra small 57mm FPV quadcopter - DIY Kit
Ultra small 57mm and only 22g light brushless drone which which uses 40mm propellers and offers 3-4mins of pure fun on 1s battery.
Nano X with 0703 15000kv and 1S Tattu 220mah (5 min 2 sec)
DIY kit is available here:
Read responses in rcgroups.com