The Hobby ProBox (from recent Kickstarter) makes an great carrier for painting supplies and miniatures. I felt it did not provide enough storage for brushes so I designed a tray to hold brushes. Then I noticed that the bases on my miniature collection were either too small or too large for the slots in the miniture trays so I created disks that dovetail into the slots and the tops set slightly proud of the drawer allowing me to glue my miniature to the disks.