Hello Fishkeeper..easy to keep plants will be a relative term..it may look easy for me, but you may find it time consuming and with lots of things to consider. Well, such is gardening..there is always something to consider. Often times it really takes some trial and error to find out what will grow nicely in your area.
I grow 2 Sarracenia pitcher plants, Sarracenia purpurea and Sarracenia psittacina. Both prefers to be outdoors year round and always with wet feet even during their winter dormancy stage. Best to use rainwater or distilled water or reverse osmosis water, not tap water due to the chemicals in it.
Some other carnivores which I grow indoors are my Nepenthes and Pinguiculas. I use rainwater if we have it or distilled water and I let them stand in a few inches of water. It will really vary depending on your location, maybe you won't need to put it in standing water like I do here. But so far the two Nepenthes I have is happier in some standing water. This is in consideration of our low humidity levels here. They grow by our west facing window but come summer time gets shaded by our city trees in the afternoon. With my Nepenthes, sometimes I allow it to be outside briefly to catch something if it can..or I feed it an errant live spider that happens to wander indoors.
Pinguiculas can grow by a north facing window, and during their carnivore stage, fungus gnats find them hard to resist. These carnivorous plants are still doing photosynthesis on their leaves, so it can make its food, but needs the insects for its nutrient needs. No fertilizers for the carnivores. Some may disagree but that is the usual/traditional way of growing them. My Pings also makes nice blooms, and they look like little violets. The soil media used for them is a mix of peat with no fertilizer, some long fibered moss, or you can also add pumice or some orchid bark to help in drainage.
Water from water softeners not good for plants due to sodium in it.
If you intend to grow desert type succulents like some cacti, these plants would enjoy being outdoors in Spring to late Fall, and they can take full sun happily, in a very well draining media and using containers with drainage holes. There are succulents that prefer part sun-part shade, and will burn if it is in intense sun. The thing with succulents, they will tend to etiolate, or go leggy as it tries to seek more light. Maybe you can use your big rubber container as a catch all for excess water, but keep your succulents in individual containers buried in some rock set-up in your rubber container where the roots will still be above the water accumulating below, so that way the roots are not soaking in water. You must still have a drainage hole somewhere in your rubber container to fully drain and flush out that excess water. Succulents do not like to sit in water, their roots will rot easily.
If you feel like mounting plants, Tillandsias are easy to care for, you can attach to anything, does not need to sit in water, but you will have to give it good air circulation and occasional water spritzing or water dunking if it is just too hot.
I grow some indoors plants in water gel beads, like Golden Pothos, and Dracaena Sanderiana. I use water get beads, allows roots to breathe, and at least I do not have to keep changing the stinky water. I just watch it if the beads are shrinking, so I just add some more water so it will enlarge again. I also grow Chloropyhytum comosum or spider plant in semi-hydro, that is a container with no holes at the bottom, but has two holes a few inches from the bottom; so it acts as a spill holes when I water from the top. I use clay rocks with it, so it still wicks water from the reservoir of water below and allows the roots to breathe.
Hope that helps you decide, what direction of planting you really intend to pursue. But pretty much with any plant, you got to provide them good drainage or air circulation at the root zone, proper lighting, correct type of water and frequency of watering, and the proper media to plant them in. Good luck!
