Favorite 3DS feature. (Not including playing games.)

[Uncle Edit]

The 3DS boasts quite a few features, but which one is your favorite (excluding playing games)?

Mine is probably Nintendo 3DS Sound, because it lets me listen to some of my favorite songs in a whole new way, sometimes giving me funny results.
What do you folks enjoy the most.

 

[Dolce]

The Mii Maker cause I have sooo many Miis. xD And Netflix cause I like watching movies and lying in bed with my 3ds. :3

 

[Oswin]

Nintendo Letterbox/Swapnotes

I love sending and receiving letters and Nikki is such a babe.

 

[Ebail]

Swapnote. I haven't used it much, but it is clearly fun to me to spam with.

 

[dig]

Makes a pretty good coaster.

 

[proserpina]

The Letterbox/Swapnotes. I am a sucker for the notion of sending little hand written letters to people. :'3

 

[CrackFox]

Definitely swapnote. There's nothing like documenting your day in a swapnote diary then sending it to all your bored mii friends.

 

[RainbowSylveon]

Swapnote. I also kind of like the Mii Plaza too xD