ANNIE is on the right track with 'banana'. CHARTREUSE says s/he knows it, and CYN thinks it's hilarious!

In 2019 a man robbed almost $8,000 from 2 banks in Israel using this. What is it?

--an avocado, which looked like a grenade

Today's question is

Nature has its own thermometer. You can tell the temperature by counting 'these'