How Do I Fix a Squeaky office Chair without Taking it Apart?

I’m customizing an ergonomic task chair online and adding a headrest costs an extra $80. I sit completely upright while

I’ll be right in the middle of typing an email and my desk chair suddenly sinks down to the lowest

Our corporate training sessions often run for four to six hours at a time, and employees keep complaining about leg

I’m remodeling our corporate breakroom and adding a high island counter for employees to eat lunch, but I’m completely confused

I’m trying to pick out seating for our office’s high-top collaboration tables, and I can’t decide between standard stationary stools

I see everyone online raving about these thousand-dollar executive chairs, but I can’t wrap my head around spending that much