One can do nothing. One gives freely, seen and unseen.
A parable of two servants
Ibn Abbas said this compares the disbeliever and the believer. Mujahid said it compares an idol with the True God. Either way, one has power over nothing and the other gives from good provision, in secret and in public. The difference is so plain only a fool would miss it.
Two people in the same office earn the same salary. One spends it all on himself and feels stuck. The other quietly pays a colleague's bus fare and gives openly at the mosque drive. Same money, very different person.
What I do with my money in private does not really matter.
Giving in secret and in public is what makes a provided person different.
Give something small today that nobody will ever know about.