There have been some amazing stories (see here) of Israelis donating a kidney to a total stranger while a relative of that stranger donates a kidney to the Israeli’s relative. Thanks to an agreement with the Czech Republic, this recently led to a six-kidney transplant exchange.

https://www.news1.news/il/2019/12/6-transplants-thanks-to-the-exchange-of-kidney-donations-between-israel-and-the-czech-republic.html#google_vignette