Yea, she is all about care bears, so I made her a personalized care-bear edition nook color for her birthday.
Custom icons, each home-screen to a different folder for wallpapers, the system font is in the actual care bear font (which I had to make from scratch because the ones available on the internet suck)...custom boot animation, etc..etc... it was a fun project, and got her to stop borrowing my nook color since she has her own.
She also got a taste of what the dev work i'm doing actually turns into, so she's more willing to give me dev time - all in all it was a big success and a lot of fun.
It really hit home when she had a chance to use someone else's nook color recently that was factory stock - lol - she was like "I couldn't do ANYTHING with it".