Palm Tree 
To dream of palm trees denotes a certain serenity and mighty aspirations. Dreaming of palm trees may also refer to your ambitious expectations and triumphs.
Rectangle
To dream of a rectangle symbolizes the number four because of its four sides and four corners. To notice a rectangle in your dream signifies stability, wealth, and control
Saltpeter
If you dream about saltpeter can indicate that you are about to enter a low period in life and experience incredible sorrow and heartache.
Scientist
To dream that you are a scientist symbolizes your desire to try new things and express your individuality.
Smuggling
To dream that you are smuggling something implies that you are attempting to obtain something that you believe belongs to you. Someone or something is prohibiting you from collecting something that you are entitled to. Pay attention to the item you are smuggling as this may hold further symbolism.
Spaghetti
To dream of seeing or eating spaghetti implies that you feel trapped in a situation involving someone else. It's possible that you want to move on but aren't sure of which procedure to use. This issue is making you feel awkward.
Stoplight
To dream of a stoplight indicates that someone or something is preventing you from achieving your objectives. Perhaps you want to excel beyond your capabilities for fear of not advancing. If the stoplight is green, then this implies that the direction or goals that you are following are acceptable.
Valentine
To dream that you are sending out valentines is a subconscious reminder that you need to share the love you have in your heart with those around you.
To dream that someone has given you a valentine indicates how cherished you are as a friend and lover. Those around you appreciate your generosity and kind heart.
To dream of a box of valentines foreshadows the return of a previous love to your waking life.
Blackmail
To dream that you are blackmailing someone implies that you strive to win at any cost, even if it means hurting someone else.
To dream that you are being blackmailed indicates that you feel vulnerable and exposed. You are doubting your potential to succeed. It may also represent a 'black male' who you associate with.