Nice one! The day count thing is only a minimum, I've stalled before trying to save stuff up for later in the challenge, all in one go is a much better approach.
I dropped off a bag of pyjama trousers/shorts at a clothing donation bin this morning, that can be my "one".
One bag lol, I think this could be a good step for the future of my currently cluttered life.
I think this is the game (sorry I forgot based on the title what the game was): https://www.theminimalists.com/game/
Find a friend, family member, or coworker who’s willing to minimize their stuff with you next month. Each person gets rid of one thing on the first day of the month. Two things on the second. Three things on the third. So forth and so on.