It's a small touch that will leave a major impression on partygoers,. Here are some of our favorite unicorn party decorations and unicorn party ideas to help you plan the perfect unicorn themed party. Pick up some streamers and balloons of various hues—choose traditional rainbow colors or soften it up with options like aqua, pink, lavender, yellow, peach and light green. Web see more reviews for this business. That means you need to find a bunch of potential birthday party places in pretty prairie that she might enjoy.