Stitch 
To dream that you have stitches implies that you have an obligation to keep the peace and secure the bond in a relationship or issue. Perhaps you feel the bonds loosening and want to be able to repair the rift that is developing. Pay attention to where the stitches are, as this can hold further symbolism.
To dream that you are stitching suggests that you should use your qualities to give extra attention when tending to a sensitive issue.
Tunnel
To dream of a tunnel represents the main female reproductive organ, the womb, and giving birth. Hence, it may indicate your need for protection and nurturing.
To dream that you are going through a tunnel suggests that you are discovering parts of your unconscious. You are in the process of gaining understanding and enlightenment. Alternatively, it may indicate your myopic nature.
To see light at the end of the tunnel symbolizes hope and a brighter future.
Vacuum
To dream of a vacuum represents the emptiness you may feel in your waking life. There is something missing. Conversely, the vacuum may be a reminder that we all need to spend time cleaning up our acts on occasion.
To dream that you are using a vacuum is an indication that you have lost control over a waking life situation.
Voyage
To dream of taking a voyage or a long trip implies great luck and fortune. You will soon receive the benefits of an inheritance. Be aware, as it may not be money!
Conversely, if you see yourself taking a voyage that ends poorly, consider those around you. Your love may not be faithful to you.
Appear
To dream that something appears out of nowhere indicates that you are limiting your imagination and individuality. You should develop more unique thoughts and ideas. Your emotions should be based on practicality and reason. If you pay attention to the object that is appearing, you will reach a better comprehension of your inner feelings and ideas.
Autumn
To dream of autumn means that you will get something that resulted from the difficult efforts of other people.
Diving
To dream that you are diving into clear water suggests that there will be closure of a humiliating issue. You will endure some trouble, but things will work out in the end. This dream could also suggest that you are working to uncover the root of a difficult situation. It could also be representative of your subconscious.
To dream about diving into muddy water indicates that your dealings will cause your grief and stress.
To witness others diving in your dream signifies a sense of harmony with your feelings and mental stability.
To dream of animals diving indicates that you are digging into your primal and sexual desires that have usually been kept hidden.
Aliens
If you dream about aliens, it symbolizes an unfamiliar or strange situation. This can be viewed in either a positive or negative way, depending on the context of your dream. Feelings of fear when dreaming of aliens indicate that you are either not ready or deliberately holding something back. Feelings of curiosity toward the aliens indicate that you are willing to take a risk and roll with the punches.
The presence of aliens in your dream may also point to subconscious feelings of resentment. Take the time to look at your relationships and be sure to let someone know if they are overstepping boundaries or making you uncomfortable in some way.
Alternatively, an alien in your dream can be symbolic of hope. Dreaming of an alien is your subconscious mind letting your conscious mind know that there is hope in what has otherwise been a seemingly hopeless situation. Do not give up!
Icicles
To dream of icicles melting from trees represents a gleam of hope; this may portend favorable developments regarding problems in your real estate.
To see icicles forming in your dream foretells that a problem is building up.
Thimble
To dream about using a thimble shows a propensity to look out for others before taking care of yourself.
To lose a thimble in a dream is a prediction of financial depletion and other woes.
To dream about obtaining a thimble means that pleasant new relationships are on the horizon.