Mango 
To dream of a mango represents erotic fantasies, passion, and productivity. The mango may also be a play on the words 'man go,' indicating that perhaps you should consider ending a relationship.
Maple
To dream of a maple tree represents your ability to accept others, offer affection, and be modest. It also implies that you will enjoy prosperity and pleasure in your life.
To see a falling maple tree symbolizes problems and severed bonds in a domestic relationship.
To see a maple leaf in your dream symbolizes your physical awareness in relation to smell, touch, sight, hearing, and taste. It can also imply assistance and guidance.
North
To dream of the direction north symbolizes realities in your life. It also suggests that you are moving forward and making progress in life.
Nymph
To dream of nymphs foretells of a blissful experience relating to your sexual fantasies.
Opera
To dream of an opera suggests a desire for greater things in life, even to the point of occasional grandstanding.
Opium
To dream of opium bodes that in the pursuit of riches, strangers will get in your way through cunning and provocation.
Otter
To dream of otters represents joy and wealth. You will experience bliss or unusual gentleness with your loved one.
Paper
To dream of blank white paper signifies a desire to reinvent yourself and start anew in your life. Your dream may be an appropriate medium to express yourself
To see a stack of papers suggests stressful overload in duties and responsibilities.