After a hard day of work, you got off the train and started to walk home. Along your normal route was a run-down strip mall and there was a strange new store open.
Wandering inside you notice a plethora of items and artifacts. Ornate mirrors, a knife labelled "athame", candles and incense, some rings, some high heels, even some kitschy magic wands and top hats.
But the large filing cabinet shocked you. You almost thought it was used for accounting or for the store's use... you quickly opened a drawer. Nothing in it. Huh. Well, it had a price on it. Just $5.
You wondered why on Earth a filing cabinet would be for sale along with all these otherwise magical seeming items. The store's proprietor hadn't peeked his or her head out yet, you couldn't ask.
The filing cabinet drew you in. It's price was so cheap. You thought briefly of how you would be taking it home and tried to lift it. Oof, it was easily 40 pounds. Well, at least you didn't have far to walk.
You walk up to the cashier and ring the bell. No one came out. 20 minutes later, you huff briefly and decide to just lay out $5 on the cashier table along with a couple $1 bills for the trouble as a tip. You pick up the filing cabinet and take it out the door.
The walk home was surprisingly easy. Perhaps the filing cabinet's magic was it's ease of carrying.
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You set up the filing cabinet in your room. Now that it was yours, you riffled through the drawers, all 4 drawers were empty save for the bottom. Inside was a hand-written note with some pretty bad cursive writing - as best you could tell it said:
"Thank you for your purchase of this Magical Filing Cabinet! Sorry we weren't available at the time of your purchase, but your tip and business are appreciated. [It was unintelligible for a few lines] -warn you that this filing cabinet can change people's priorities and memories and even personality - [unintelligible again!] - some physical attributes are more easily - [the rest is unintelligible but includes a clear signature at the bottom]"
You weren't quite sure what to make of this. It was quite the trick that the proprietor knew you'd be purchasing this cabinet, but something deep in you told you to trust that this... thing... was magic of some kind and capable of some kind of mental transformations and even physical transformations in people. The note seemed to include numbered instructions but the best you could make out is "wait until nightfall for co-resident's files to populate" whatever that meant.
You sat back onto your bed and decided to while away a couple hours before the evening...