Print as many of these things as you want, and arrange to make your own hanging garden for a sunny window.

You will need to make holes in the models to pass string through to hang them up. I used superglue to fix the base thingies inside the bottom of each planter to keep them from moving around too much. I also printed a base thing for the bottom planter too but I scaled it up by 25% to fit. My bottom planter wasn't fully watertight, but a couple coats of nail varnish sorted that out pretty quickly.

Enjoy!