You don't need to redo your whole workspace to feel better at your desk. A few small, inexpensive additions handle the most common complaints — stale air, dry skin, glare, and afternoon slump — without any real setup.
The afternoon slump: airflow
A handheld cooling fan is the fastest fix for a stuffy room, and it's small enough to keep in a drawer. For a more permanent desk setup, a desk fan with built-in humidifier covers both airflow and dry air at once, without the noise of a full-size unit.
Dry office air
Heating and air conditioning both dry out the air around a desk fast, which is rough on your eyes, skin, and focus. A compact USB humidifier plugs straight into your laptop and runs quietly in the background all day.
The 6pm transition
When work ends but you're still at the same desk, lighting does a lot of the psychological work of "switching off." A candle warmer lamp swaps the harsh overhead light for something warmer, without an open flame near your laptop.
None of these are dramatic changes. That's kind of the point — small, low-effort upgrades are the ones that actually stick around on a desk instead of getting shoved in a drawer after a week.