Woodpecker 
To dream of a woodpecker is a representation that some part of your walking life has been overlooked. The woodpecker represents diligence and industry.
Blacksmith
To dream about a blacksmith is a sign of resilience and fortitude.
Twenty One
The number twenty-one represents a turning point in your life, a transition from childhood to adulthood. It also signifies that you need to be more responsible of your actions.
Twenty Two
Twenty-two denotes wisdom and knowledge. It denotes that you are a very practical and result-oriented person.
Twenty Six
The number twenty six symbolizes mother earth and the principles of karma.
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.
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.
Post Office
To dream you are in a post office suggests that your inner self or subconscious is telling you something of importance. It may be in relation to getting in touch with someone. It may also mean reinforcing what you believe in.