I have these: https://smile.amazon.com/gp/product/B07K1G4XX3/ which holds most pens / markers fine. I have my mildliners, dual-brush pens and Faber-Castell Pitt artist fineliners in those, along with a few mechanical pencils.

and

One of these: https://smile.amazon.com/gp/product/B07SJ66BVJ/ which has drawers for my stamps and stuff, and in the top back section I keep any misc pens / markers, ruler, scissors and water brushes that don't fit nicely in the others. I keep my vitamins in the bigger top sections so they're in front my face every day.