****FINALLY UPDATED to address lame design flaws****

Added threaded couplers to attach the post and post extension together and the post or extension to the top. 

If the coupler is too big on your print, scale it down a little in x and y.

Coupler has a slot in the bottom to aid in extraction with a flathead screwdriver if necessary.

The post snaps in place to the base and it seems to hold well enough. Probably should have threaded it, but didn't in this iteration.

Necklace and jewelry holder for necklaces on top and rings and earrings in the base.

Short - Print Post and one Extension, 2 couplers

Tall - Print Post  and 2X Extensions, 3 couplers