As per the Twisted Heart Vase,
Scale to suit.
Print (in red or paint it red).
Give as gift.
Feel the love.
Print with zero infill, 1+ perimeters, and a few solid layers for the base. Either delete the last few layers of code or stop the print before it starts bridging the top, or cut off the solid layers after the print.
With Slic3r 9.4 you can choose how many top solid layers you want. You want 0.
I have also uploaded a shelled out (hollow opened topped) version of the vase with a 1mm wall thickness in case you prefer to programme that one instead.