3D Xmas Tree Led DIY Kit BatteryCase

A very popular DIY soldering kit from Aliexpress/amazon. 

Christmas tree in "3D" with colorful flashing LEDs.

I had a lot of fun with my son (it was his first soldering job and he loved it!) but it was such a shame that the battery holder was so visible, so I made a nice tight container for it.

Contains a semi-circular recess for the USB plug. The printed circuit board fits tightly in the tray. Because the bottom is left open, the printed circuit board can also be easily pushed out to replace the batteries.