Below are some photos of a box that I am using for my travel paint storage box. I took a small piece of wood, cut 2 slits in it and then glued it to the bottom and side of the metal
Looking for a paint station/paint storage : r/minipainting
DIY Craft Paint Storage: My Pretty PVC Wallflower Organizer - Jennifer Maker
Creative paint storage solutions – Heather's Handmade Life
Model Paint Storage Case Compatible with Testors Paint Set, Paints Organizer Carrying Bag Holds 60 Bottles with 9 Fine Detail Miniatures Paint
60 Bottles Model Paint Storage Case for Testors Paint Set, Paints Organizer Carrying Bag- Case Only
Paint Storage Ideas and Organization
Dollar Tree Mini Crate Storage Organizer for Crafts
Transon Airtight Paint Storage Palette Box 16 Wells Fuchsia Color
Craft Paint Storage with Wooden Drawers
Craft Paint Storage {Wood Project}