Pocket extensions are a great beginner’s sewing project, nobody can see your pockets in most pants so it doesn’t matter if your stitches are uneven. A basic sewing kit is all you need, you don’t even need a sewing machine.
https://youtu.be/LRAz9eQexHQ?si=m2RiNH1acfhkXTYM
https://www.instructables.com/How-to-Extend-Your-Pants-Pockets/
What makes you think this isn’t how I code? Offices love me, this is way cheaper than a bunch of ergonomic equipment.