Hi purpleinopp!
We have a multi-pot planter we're testing in some stores (we call it the WaterWick Foliage Combo for the time being) that allows you to grow eight different WaterWick-ed plants together in the same planter. One thing that's fun about it is that you can put succulents and fittonias in the same combo planter because each "drinks" through the wick at its own rate.
:-)
If it performs well, you'll probably see this concept roll out to more stores. And if it takes off for us, you're sure to see other vendors copy the idea over time!
---Justin
Costa Farms Horticulturist