Empty spool tower

How to get rid of your empty spools? Right, you build a giant tower out of it! You have the base part and the top part. The top part could be printed multiple times to get the tower bigger and bigger. I printed it with PLA, so it should be fine. My print settings: 0.2 mm layer height3 walls5 % infillUse a raft when you print the top parts! Don´t use support for the thread on the bottom of the top part