Well, you can find plenty of chameleon safe plants at most home improvements stores. The only reason those online stores have so many that are out of stock is because it is wintertime and they can't grow anything to sell. If you want something such as a pothos, I know that those are sold year round at my local home improvements store, so should check the stores around you, too, if you haven't already. Plus, it is beginning to be spring and warm up outside (thank goodness

), so more online stores will have plants, and they will be much easier to find and order, not to mention a plethora of plants being sold in actual stores.
You can also consider buying seeds for the plant you want and then growing it indoors and then taking it out in the warmer months. You can find seeds year round in most stores.