In the past few months, we have covered plenty of cool robots for kids. ELFi robots look a lot of fun to play with as well. We are talking about DIY robots built with LEGO, Arduino, and other parts. They are app-enabled. ELFi Big happens to be a sophisticated robot that can dance, fight, and navigate. It has external speakers and a projector, so you can use it as a telepresence robot. Like what you see? You may want to check this project on Kickstarter.