Use "Legos" instead of take out boxes- Toss Legos into boxes.
Let young ninjas fight off balloon enemies at your Lego Ninjago party.
Anders Ruff Custom Designs, LLC: A Lego Ninjago Inspired Birthday Party
Craft, Interrupted: Ninjago / Ninja Birthday Party - could be used for an obstacle course party too
Xavier just informed me that he wants a Ninja party this year.