Rocket! from a tube mentos

Print the two parts, only the base needs supports, I recommend you print it with a brim for better bed adhesion. 

You need a tube with outer diameter of 53mm (or less) and inner diameter of 50mm (or more).

I recommend you glue the top part of the legs to the tube, this makes it much stronger.

I also added the tube if you want to still make this but don't have a tube.