In my shul someone usually brings around the pushka (charity box) during the chazzan's repetition of shmoneh esrei. I have also heard that it is appropriate to give tzedaka during v'yivarech Dovid. ...
Many times, people collect money during davening, including during birchos krias shema, and the custom is to give during that time. Is This mutar? The interruptions allowed during this time seem ...