Lacripure
There’s an interesting phenomenon where each time I go home I bring two or three vials of LacriPure saline solution for the lenses I wear. And I would bet millions of dollars that I already have enough at home but the cost benefit analysis of carrying them back ensures their presence in my bag always holds. So they accrue and accrue and now I have a trapezoid of them on my nightstand like a house of cards or a decapitated solo cup pyramid, three on four on five on six.