Another simple concept: Weather in Houses
Maybe deep in the cities in Lemuria, there's an NPC that provides a crafting recipe that isn't too difficult that creates special gardening machines that would create complex machines that could generate different types of weather or a special tune: the function of these housing items is that they will produce a single gardening spell for your plants without you spending energy, practically automated gardening system. There could be one that creates rain clouds, one that create mini suns, one that creates gardening magic... etc. In other words, it's a permanent version of the gardening spells that keep plants with water/suns/pollination/magic/music that requires no energy to use. I think this could be the next step in expanding gardens to the way players can envision because if they could use these machines for some gardens, then they could use the energy they saved for other gardens in other houses they have or use that energy on other activities like fishing/pet-training. This also makes it much easier for advanced players to maintain their gardens because it will make it impossible to miss taking care of a plant as the machine will simply do it for them automatically.
A lingering problem in this game is that too many things require energy, making it difficult to do various activities players want to do. For a lot of players, gardening takes up most of players energy because it is something players are responsible for almost daily and gardening spells take up a lot of energy. But these machines could solve that problem by creating weather that takes care of plants for you!
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