a little of this, a little of that: Ninja Birthday Party!
Kids bday idea - obstacle course! Inspired by Tough Mudder - the Barbwire Crawl!
roeandlee: Hi-Ya! It's a Ninja Birthday Party!
Ninja Birthday Party! Ninja food, ninja games, and more! Lots of ninja ideas.
Favors from a Ninja Party #ninja #partyfavors
Ninja cupcake More
It's a Ninja Party! - AlyStamps.com
Ninja Invitation Ninja Birthday Invitation Karate by BusleyDesigns
Ninja Karate Kicks Birthday Card Modern Birthday Party by LNZart, $15.00
Ninjago Eyes - Ninjago - Ninja - Party Supplies. $3.00, via Etsy.