Chalkboard 
To dream of a chalkboard symbolizes problems you may have encountered during your childhood and youth. Pay attention to the message that is being conveyed here. Perhaps you need to prove yourself worthy or capable of handling a certain issue or situation. Take note of any words that are present on the chalkboard. This dream may also represent obligations or responsibilities that are in arrears.
Concussion
To dream that you have a concussion implies that you are wasting your natural skills and talents. You should take some initiative instead of expecting things to occur on their own.
Book Store
To dream of a book store indicates that fictional and unrealistic ambitions will divert your attention from more important tasks and projects. These goals, if achieved, will prove fruitless and unfulfilling.
Making Out
To dream of making out suggests a need for physical touch and connection.
A message of self-nurturing is held within this dream, and massage and/or immersing yourself in water can help gain the equilibrium needed to make the necessary emotional connection.
Electricity
To dream of electricity indicates the power created by life. You might require some recharging of your own batteries.
To dream that you have lost electricity suggests that you don't have the proper foresight or vision about a particular circumstance.
Fax Machine
To dream about using a fax machine suggests that your subconscious is sending you pieces of information. These communications will prove to be genuine.
Mathematics
To dream about mathematics suggests that you are attempting to assess an issue and discover the best way to resolve it. You should use practical and sensible reasoning rather than your instincts and feelings.
To dream that you are unable to solve a mathematical problem or equation is a reflection of an issue that you are unsure about. This dream may be leading you towards a resolution.
Necromancer
To dream of a necromancer symbolizes the wicked perils that may possibly be performed by your queer contact.
*See Hypnotist.
Ouija Board
To dream of an Ouija board bodes of failure in a relationship or state of affairs. It may also indicate successive disappointment in what you have planned.
Dreaming of a non-functioning Ouija board embodies difficulties caused by prioritizing pleasures over work and goals.
Pocketknife
To dream of a pocketknife hints of a friend who is reticent to show his true feelings for you.