Don't belittle any tiny good deed that can be done. After all, even the tiny deeds, if done correctly, will benefit you: "So whosoever does good equal to the weight of an atom (or a small ant), shall see it" [99:7] So if a chance comes for a good deed, step up! Who knows, maybe that tiny yet significant deed will be the difference b/w you receiving your book of deeds in the right hand instead of the left hand