It maybe somewhat evil of me, but I think there might be potential for mirror abuse, and not just the shenanigans way.
For example, grab a fairly innocent pony, perhaps Applebloom, and load her up with two saddlebags full of bits. Send her through the mirror ad nauseum. Collect the bits. Zap away the extra Appleblooms; you could set up a password to reveal the true one, like "Zecora." Crash the economy with your mountain of bits.
Did someone says inflation by too many bits? We need Pony adaption of this episode.
I kinda like Duck Tales, especially teaching children about the basics of Economy.
Pony Minecraft Avatar by Dirtytabs
Rest in Peace:
Miko Miyazaki, Thanh, Durkon- Order of the Stick
Krunch- Looking For Group
Bill- Left 4 Dead
Soap Mactavish- Modern Warfare 3
Sandman- Modern Warfare 3
Ghost and Roach- Modern Warfare 2
Gabe- Dead Space 2
Dom- Gears of War 3
Carmine Brothers- Gears of War series
Uriel Septim VII- Elderscrolls Oblivion
Commander Shepherd- Mass Effect 3
Ned Stark- Song of Ice and Fire
Apple Jack's parents