Wind up clocks and watches, if you can find them, for they are rare now. Most clocks now are battery or power driven. If you think you won’t need clocks when the sky has fallen, think again. An alarm clock can wake people to do various tasks, a wind up watch is important to those who are on patrol. If you can get spares, do so because wind up clocks don’t last forever and being able to get another one out of a box could be very useful.
Bugs Bunny: "I speak softly, but I carry a big stick."
Yosemite Sam: "Oh yeah? Well I speak LOUD! and I carry a BIGGER stick! and I use it, too!" BAM!