Scotch pine makes a prickly, stiff, good space filler in an arrangement. Blue Spruce and spruce are also prickly, stiff and good space fillers. The tips have good color, but dry out quickly. White pine is good for a wispy, graceful, soft affect. It is fragrant, and very attractive when paired with flowers like roses and tulips.
Yews are an attractive, dark green, narrow-leaved evergreen shrub.
Some people have skin sensitive reactions to yews so wear gloves to be on the safe side. The berries are poisonous to eat. Go out to cut your greens when trees and shrubs are full of water, such as after a rain or snow, preferably when they are not frozen. Protect your hands with gloves and take a bucket with you to put the broadleaf evergreens in. The needled evergreens can be put in a large box or trash bag.