Here is one company that organizes packages for those wanting to combine a visit to Israel with a couple of days experiencing what it is like to help those in need. And one US couple made good on a 50-year promise to volunteer to help Israeli farmers during a war. Their trip was arranged by JNF-USA.
https://www.touristisrael.com/tours/the-israel-volunteer-experience-10-days/
https://www.jns.org/making-good-on-a-50-year-promise-to-israel/