A Wizard Wand / Wizard Staff as wanted by my son. Consisting of three easy to print parts, just put them together and add some glue. 

For the “crystal” part I printed it in upright position, using a big raft. The same for the wand part, I used a big raft on the bottom and it printed perfectly fine. The wand may be too large for some smaller printers, I added the FreeCad File and you can change that or you should also be able to just scale it down along the z-axis in your slicer.

Note that the diameters are designed to have not a tight fit, it should be loose after joining the parts – the glue will be necessary. If you want tighter fit/different dimensions, it should be easy editable with the added FreeCAD files.