A future you is currently in use of it.
He said something about a date with the missus that went 'somewhat' sour due to forgetting 'something err.. important' and 'matches for the candles'.
I think your future self had only 5 minutes in which to get the urgent mission done, he said something about having had ot run into the broom closet to use the device, and the likely embarrassment of having to wander back out of said storage area with the items searched for but time was of the essence and improvisation was needed.
So, don't forget the matches and the something important.
(And thus the trip by your future self will be 'undone' and uneeded.)
*phew*
So whatever it was that happens, don't forget the items.
They're important.
Dunno what 'they' are or how far into the future it is, but I did hear the need for matches.
That was next week but I handled it two weeks ago. Check the hall closet. The device awaits your mission. You must not fail. You can not fail.