Summary

This is a variation on the Stomp Rocket Rocket - a solid model to print in vase mode (plus a Ender-3-compatible .gcode to do so).
Printed in TPU95A, the GCode incorporates a "tweak" to make a solid top on an otherwise vase mode print (requires slicing two models and combining the gcodes in a text editor).

The result is an extremely lightweight (and as such kid, pet and furniture safe) rocket that can easily cover up to 7 m (... there I ran out of space).

Enjoy!