Parachute 
To dream that you are in a parachute signifies a feeling of safety and security amidst danger and chaos. On the other hand, it may also imply that it is time to get out of a sticky situation or let go of an old opinion.
To dream that you have difficulties with a parachute signifies a probable act of betrayal by a person you trust and rely on.
Porcupine
To dream of a porcupine points to a need to defend and protect yourself from emotional or psychological harm.
Alternatively, it indicates possibility of a situation which requires openness on your part. This also suggests the present of someone in your life who shields his/her vulnerability.
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
Sandpaper
To dream of sandpaper indicates that you are experiencing a difficulty or crisis in a relationship. In addition, it may suggest that you need to change your aggressive and severe approach or outlook towards a certain situation.
Saxophone
To dream of a saxophone represents that you are harboring unresolved feelings that you need to convey. Perhaps someone has greatly influenced you or changed your life in some way.
Scientist
To dream that you are a scientist symbolizes your desire to try new things and express your individuality.
Sea Horse
To dream of a sea horse signifies the strength of your instinct and intuition. It may also symbolize a change in perception or attitude.
If the sea horse is invisible, then it indicates that you need to face your personal concerns rather than trying to evade them. Perhaps you need to adopt a fresh approach to a situation.
Shoulders
To dream of your shoulders represents intensity, reliability, and afflictions. You may have been expected to handle too many obligations and certain situations are arduous for you to endure. Shoulders also symbolize your aptitude for offering encouragement and caring.
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.