I noticed some interest in the cake stand I made a couple years ago, so I thought I’d offer up the design. Note: for personal use only, please don’t make to sell or sell the design.
Cut the stand from thick (about 1/4" or 6mm) acrylic. Glue together with acrylic glue or superglue. First turn the plate over and glue the posts into the post holes. After that dries, flip the plate and glue the outer rim onto the plate. The outer rim is turned a fraction and rests on the edge of the inner plate–glue it there.