Stem Picker

a quantity stepper where the thing being counted is the thing you see. press the plus and a stem swings up into the fan, or grab the tie and pull to draw them in.

key insight: the arrival and the resting place are the same geometry. every stem is pinned at the knot and differs from its neighbours by one number, the angle it leans at, so a stem arriving is that angle changing. arc an item into a straight row instead and the arc is decoration laid over the top.

two springs, because two things happen on one press. rotate takes the quieter one and scale the livelier, and since only the arriving stem ever animates its scale, the bounce lands on that stem alone with no branch on which one is new.