Cymbopogon (lemongrass), cucumber and basil.
Cut some thin slices of cucumber. Put some water in a jar and add the cucumber slices and also some basil leaves. The basil can also be added in the dry form. Make sure to also add some drops of lemongrass oil. The smell of basil will surely be the predominant one but combined with the freshness of cucumber it will be a very special odour.
Almond, orange, ginger and lemon.
Almond and orange smell are an impeccable combination. Add some water in a jar. Cut the orange in thin slices and add them to the jar with water. Cut the lemon the same way as the oranges and add them to the jar for the odour to smell fresher. If you want to add the ginger make sure to cut it into very small pieces. In the end, add some drops of almond essence.
Mint, Vanilla, thyme, and lemon.
Again, fill the jar with some fresh water. Cut the lemon into thin slices and add them to the jar of water. Add some leaves of thyme and also mint, as much as you see it reasonable. If you want the thyme to be the predominant smell you can add more of it, and same with mint. In the end, drop some vanilla extract and you’re ready to go.
Rosemary, lemon, vanilla, and lime.
Cut the lemon and also lime into thin slices and add them to a jar which is filled with water. Then, add some rosemary stems and also some drops of vanilla extract. Rosemary and vanilla make a good combination.
Star anise, apple, cloves, and cinnamon.
Cut the apple in thin slices and put them in a jar filled with water. Add some leaves of cloves and also some sticks of cinnamon. Also add some star anise, as much as you see it suitable. You can modify the predominant scent by adding more from one ingredient or two.