I have created a very simple stackable expositor for my Lego Speed Champs and other little cars. I have searched and the current models I did not like or I did not want to drill somewhere. I wanted to do something simple and fast to print and I have tried to use a minimum filament as possible due to have a little amount of PLA. To print 4 pillars takes approximately 1h 20 minutes and the base 1h each. I am using Elegoo Neptune Pro 4, 0.4mm nozzle and Rapid PLA+ from Elegoo as well. I have used tree supports on the pillars to be printed vertically, haven't tried horizontally. Infill 5% on both. Default Brim from OrcaSlicer. I will be working on new designs for pillars and new dimensions for both base and pillars. I am leaving as well the CAD files from FreeCAD to allow you modify it at your will :)