Icicle lights hang in short vertical drops from a main wire, so they look like icicles along gutters and eaves. Measure your roofline and buy enough strands to cover it, keeping the maker's limit on connected strands. Mixed drop lengths look more natural than uniform ones.
Net lights are a grid of bulbs that you drape over bushes and hedges, so they cover a shape evenly in seconds. Measure the bush's width and height; a common size is around 4 ft by 6 ft, and you can connect nets for larger hedges.
Both types should be rated for outdoor use. Clips designed for gutters and shingles make hanging faster and avoid nails or staples that damage the roof and the wire.
Cool white icicle lights give a frosty look, while warm white feels traditional. For trees and posts, see outdoor Christmas lights, or cover the whole house at once with a light projector.