I am currently using this Plano Tackle Box:
https://www.planomolding.com/fishing/fish-series/guide-series/guide-series-stowaway-rack-system
In the top section, I can keep all my larger tools like wing divider, square, mallet/hammers, a small cutting board, and knife. Still have plenty of room up there. The removable trays are all set up for different steps. One has all my sewing things, another all the stamping & tooling items. Another for all my rivets, snaps, gommets, and various setters. The only thing I can't keep in it are bottles of dye, and my tooling slab. (Though if you are using a little 6"x6", you could fit it as well)