Claw Grabber Made from Paper Cups

I made a simple mechanical claw using two paper cups and a plastic straw.
One of the cups was cut lengthwise into four equal parts, forming a flexible claw with four gripping segments. These segments act as grabbers that can close and hold small objects.
A straw was glued to the bottom of the cut cup and serves as a control rod. The entire structure was then inserted into the second cup, which functions as the body and guiding casing.

The mechanism works as follows:
When the straw is pulled upward, the cut cup is drawn inside the outer cup. Due to the pressure from the walls of the outer cup, the claw segments compress and grip the object. When the straw is pushed back down, the claw moves outward and opens again.
As a result, this creates a simple mechanical grabbing device that works without springs or rubber bands — relying only on the shape of the structure and friction.