How to make an interesting hydraulic powered robotic arm from cardboard(DIY)

In this video, I will show you how to make a robotic arm from cardboard, which is very interesting. Especially by moving the Sprite can.
The materials you need to prepare:
Cardboard, 8 syringes with rubber pistons, old batteries, 4 tubes, popsicles, glue, water and patience:) There are also empty cans for Sprite drinks.