When it comes to watering, there's nothing stopping you from simply dumping a bottle of H2O onto the plants on your balcony, as long as you're cool with possibly damaging them and splashing wet dirt all over the place. A gentler approach is a better idea, and Animi Causa's new Rainmaker—which emulates a gentle summer rain—requires minimal additional effort on your part.
The hardest part is screwing the $12 plastic cloud onto the end of a standard-sized disposable bottle, but since you have to remove its plastic cap to begin with, you should already have those requisite skills. Then it's just a matter of flipping the whole thing over, letting the water gently sprinkle down onto your plants, and waiting for your bumper crop. [Animi Causa]