This is a Xmastree window hanging. It holds a battery clip for 2 AAA Batteries and 7 Led's as an optical effect.
The tree itself is a low-poly relief model.
I painted it in Blender, it is one of my first projects in Blender.

RF 100 XL

Doesn't Matter

No

0.15

15%

Use 7 Yellow 5mm Led's, and for each of them a 47 Ohm series resistor.
The plus pole of the battery tray can be realized by twisting a 0.4mm wire into the 2 holes.
For the minus pole you can use a part of a pen spring.

Leds shall be fixed using a glue. Both tree parts shall also be glued together.
The battery tray can be accessed over the slider.