At the smaller end of the spectrum, I'm using this as an opportunity to zero out several gift cards with awkward remaining balances -- my digital loose change.

Or at least, I started to. There's a trivial inconvenience in that the donation button doesn't let you specify increments smaller than a dollar. So I wouldn't actually be able to zero them out.

This is, of course, a silly obstacle I have more than compensated for with a round donation from my main account. The inconvenience will just have to be borne by those poor retail cashiers with "split transaction" phobia.