[Dollarama] 4$ Cinema Lightbox
Cheaper than what most places would sell these things for.
It includes 90 letters/numbers/symbols.
Says it functions with both microusb or 4xAA, but unless I'm blind I don't see the microusb port and think it's just some false labeling.... still nice for the price.
Also for those in montreal, I found them at 6811 Blvd. Newman, Complexe Angrignon, Lasalle, QC H8N 3E4. The one next to allo mon coco, not Angrignon mall.