I loan out flashlights frequently when out on calls for Red Cross (fires, power out - folks have to find their car keys, prescriptions, clothing etc). I always get them back (#wood_knock)

I also loan out a lot of bandanas / handkerchiefs, to folks who just lost everything in fires, and sometimes a loved one. I don't ever expect those to come back to me.

Kindness during disasters endures, but so do ugly and rude - prepare to be generous, at least with small things.