Here's an updated list of the capsules I've gotten up to this point:

Silver Mystery Capsule: Prissy Miss Bow, Prissy Miss Snowflake Dress, rare item code

Winged Mystery Capsule: Skeletal Wings, Wings of Darkness

Faerie Doll Mystery Capsule:
1. Floating Jhuidah Doll
2. Floating Battle Faerie Doll, Floating Tooth Faerie Doll

Mystery Capsule of Evil:
1. Wings of Darkness, Evil Coconut Mask
2. Darkest Faerie Dress

Valentine Mystery Capsule: Cupid Meerca Balloon

Unfortunately I bought a valentine's smiley snack before you posted, and found out that you couldn't equip them to pets. I wish I could put the stupid thing in my safety deposit box, because I find it annoying to see it bounce around in my inventory all the time >_<.