I suspect that you're well into the measurement-error range for the things you're talking about. It would be silly to expect a measurable change in QALY for something you spend a tiny fraction of your waking year on or a tiny fraction of your annual income on. Let alone the debate about how to adjust the quality measure based on such things.
Fortunately, at these scales, you can use anecdotal evidence of improvement in YOUR experience, for many things. Your friend's smile or your co-founder's continued stream of horrible ideas are plenty of reward for the low cost of the kindness you're considering.
What I mean by the "usual good actions" is notable good deeds you do may be a few times every week. Some examples:
What I mean by "altruistic impact" is probably QALYs, but I guess it's harder to use that metric here because you're working with changes in a pretty high quality life already vs. the difference between alive and dead. So may be there's a better metric. I'm also interested in the indirect impact of these actions (see my comment).
I'm also open to better a rephrasing of this question.
Oh, and I'm happy to hear everyone's thoughts on this without research too.