The Procrastinator 3000 is the simplest of mouse jiggler devices.

Watch how it works:

https://i.imgur.com/9lpT7iE.mp4

Features:

• Low cost and low energy consumption
• Usage is undetectable by any software 
• Failproof design
• Very easy to print

What you need and how to build:

1. Print the file however you like. I printed it with a 0.4mm nozzle at 0.2mm and 10% infill.
2. Buy a clockwork like this: https://www.amazon.de/gp/product/B093FJMFJS
3. Print out a picture with a pattern and glue it to a piece of cardboard.
4. Find a round object that fits the hole in the print and cut the cardboard along it.
5. Find the middle of the cardboard cutout, make a small hole and stick the second hand through.
6. Bend the second hand to give the cardboard some support.
7. Put the clockwork into the hole. You might want something to cover the hole but it is not necessary.
8. Enough work, procrastinate!