A non-textured model of Marth from his Appearance in Super Smash Brothers: Brawl.
After some fussing with JDK and SDK trying to get it to work, the rest of the process to set up AR implementations more or less moved on well.
The actual use of Unity itself with parent/child relations and objects weren't too hard to understand as well. I just had to get used to the interface.
Seeing the model I chose from my phone's camera was really cool and made the frustration with getting SDK and JDK worth it. Especially when setting up debugging on the phone to test the APKs I published was super easy.
With the ease of use (as far as one model on one target image is concerned at least) I can absolutely imagine AR to bring everyday experiences to life through eyewear of the future.