Like diamonds tumbling from an arabian beard, these are the Crystal Castles songs that aren't on their self-titled album.

There are actually two main slices in this, metaphorical if you will, pie. The first is the unreleased stuff, demos and so on and so on:
THRASH THRASH THRASH:
Chess Mess
February
Rot
She Fell Out
Dolls
Insecticon*
No Skin
Tuesday
Untrust Us (original)
Bitter Hearts
Black Fag
Too Young Too Black To Live
Mother Knows Best
Cry Babies
Then there's all the remixes that Kath's done for various folks. Didn't include the HEALTH stuff because hope to god you have that already. This stuff actually comprises the "Remixed Rewired" compilation plus a couple other treat bag treats. Also included my own mashup of "Magic Spells" with Bruce Cockburn's "Maybe the Poet" yeah yeah:
REMIXED REWIRED:
Hunting for Witches (vs Bloc Party)
Leni (vs Goodbooks)
Atlantis to Interzone (vs Klaxons.... slower version)
It Fit When I Was A Kid (vs Liars)
Trash The Rental (vs Sohodolls)
Lovers Who Uncover (vs The Little Ones)
Divebomb (vs The Whip)
Make It Hott (vs Uffie)
Death (vs White Lies)
Woman Who Can Touch You Where You're Human (vs Cockburn)
///YOU WILL ALL DOWNLOAD EACH OTHER///*this song? good god. you know that movie 2012? with all the groundsplitting, earthshaking so on and so on? this song actually plays over all those scenes. no other dialogue or sound effects
**didn't include the popular fan-made halycon because it sucks dick
***some of the id3 tags ain't perfect right but you can fix