LEGO Ninjago Birthday Party Resource Guide - ideas for DIY invitations, decorations, food, and games
Movie Muse - Erin Expounds: LEGO Ninjago Party
Gourmet Mom on-the-Go: Easy Lego Pops
Excellent Ninjago Party - tons of ideas, and she has separate posts on how she did some of the things. Awesome!
Craft, Interrupted: Ninjago / Ninja Birthday Party
Two Silly Boys: Ninjago Party
Distance Makes: Party Details
Creative Party Themes and Ideas -- We make celebrating simple!
24 LEGO Party Games and Activities
SimplyIced Party Details: Lego Ninjago Birthday Party
roeandlee: Hi-Ya! It's a Ninja Birthday Party!
kissable: Ninja Birthday
Folding a Napkin Into a Pinwheel
"dinosaur" egg - maybe deviled snake or dragon eggs