These trays can be attached by magnets. It will allow you to attach your miniatures(Based magnetized) on tray. It will allow you to hold more miniatures in a case.
Jucoci Miniatures Storage Case Miniatures Transport Case (Medium Size)
Tara Toys Hot Wheels 48-Car Storage Case – Durable Plastic Carrying Case with
Rage RC Stinger BL FPV Drone with 1-Axis 1080p HD Camera & Storage Case RGR4600
Remote Control Aluminum Storage Case for RC Planes/Cars 17x12 inches
Realacc Drone Quadcopter Carrying/Storage Case
Ngdiluxury Double Sided Storage Case for Hot Wheels 48-Cars, Clear
