Paint Carousel for 17 ml and 15 ml dropper bottles. The entire thing can rotate with the help of a 4in lazy Susan. Each deck can rotate independently if built correctly. ( when installing the stems do not push too hard. A 1 to 2 mm gap is needed for rotation.) Supports are needed for the base and top. add supports to the square cut out on the base. Add supports to the top plate overhang. all that is needed are the parts and some super glue.

one Carousel is 1x Top, 1x Base, 3x Stems, 3x 17ml or 15ml Carousel( this can be tailored to your needs.