Triangle 
To dream of triangles signifies your goals, potential, and truth. It is also a symbol of spirituality and oneness of mind, body, and spirit. On one hand, it may also refer to a love relationship you have with two other people in your waking life.
Tricycle
To dream of a tricycle signifies the end of tension and cause of worry in your life. It also denotes your straightforward and free-spirited nature.
Unicycle
To dream that you are riding on a unicycle represents that you are exercising influence and in total control of both business and personal situations.
Vitamins
To dream of taking or seeing vitamins symbolizes the weak nature of your self-control. You must strive to become stronger in your convictions. Conversely, vitamins may indicate that you have made some poor dietary decisions and your body is lacking in some important nutrients. Consider changing your diet to include more healthy food choices.
Computer
To dream of a computer represents the expertise, knowledge, and progression of today's world. You are being offered new possibilities and options. This dream may also symbolize your desire to break free from conformity and be able to exude your own personality. You tend to follow the group without offering your ideas or suggestions. You are too passive. Perhaps you feel inferior and unimportant in your role.
To dream that your computer has a mind of its own implies that you fear being unorganized and unable to manage aspects of your life. You may feel burdened and pressured by others and unable to determine your own actions.
To dream that a computer has a virus indicates that there is some aspect of your life that you cannot dominate.
Crickets
To dream of crickets symbolizes self-discovery and reflection. You are looking for advice and direction. To hear crickets in your dream indicates that small issues are causing you distress and frustration.
Diarrhea
To dream that you have diarrhea indicates that you have lost authority over some aspect of your life or emotions. This dream could also suggest that you need to get rid of bad feelings from your system as soon as possible. You may not have dealt with a circumstance enough or you are avoiding the situation altogether.
Please see also Bowel Movement.
Dulcimer
To dream about a dulcimer represents your relaxed thoughts. You believe that your ambitions and hopes will come to fruition.
Internet
To dream about the internet signifies your need to connect to a bigger group of people. This also tells of how communication has become very important to you.
Juggling
To dream that you are juggling denotes that you are trying to attend to a lot of things at one time.