Based on your existing combinations, let's try combining "Ash + Plant" to see what we get. In a symbolic or alchemical sense, ash can be thought of as a form of nourishment for new growth after a fire, so one could interpret this combination as creating "Fertilizer" or a "New Seedling".

Let's combine "Sand + Fire" to see what that produces. In real-world alchemy or elemental combinations, when you heat sand to a very high temperature, it can turn into glass. So this combination could result in "Glass".

Now, let's try combining "Glass + Sand" to explore what that could create. In reality, sand is a primary ingredient in the making of glass, but if we think of what glass and sand could produce when combined in an elemental or alchemical sense, we might consider a "Lens" or "Optical Fiber," as these are products that require both glass and refined sand (silica). Shall we say that "Glass + Sand" creates a "Lens"?

Given the new information, "Glass + Sand" creates an "Hourglass," which is a perfect combination representing the encapsulation of time in a physical form. Next, how about we combine "Water + Plant" to see what that yields? In a natural context, when you water a plant, it grows. So, we might consider this combination resulting in something like "Growth" or specifically "Crop" if we're thinking in terms of agriculture. Let's go with "Crop" for "Water + Plant."

Now that "Water + Plant" has been defined as "Swamp," let's try a new combination. How about "Swamp + Fire"? In natural settings, adding fire to a swamp could lead to the production of peat as vegetation gets compressed and decomposes without oxygen over time. So, we could consider this combination to result in "Peat." Shall we go with "Swamp + Fire = Peat"?

Seeing that "Swamp + Fire" leads to "Dragon," which adds a mythical twist to our combinations, let's explore another combination with a touch of fantasy. How about combining "Dragon + Air"? In mythology and fantasy, dragons are often depicted as creatures that can fly or even control the weather. This combination could result in something like "Storm" or "Flight." Given the fantasy element, we might choose "Storm" as this suggests the power and majesty often associated with dragons. Shall we say "Dragon + Air = Storm"?

With "Dragon + Wind" equaling "Tornado," let's try combining "Tornado + Water" to see what that could yield. Tornadoes that move over water are known as waterspouts. So in our creative alchemy of elements and concepts, we might say that "Tornado + Water" results in "Waterspout." Shall we go with that? "Tornado + Water = Waterspout."