This pencil is an example of an Ad Tip.  Instead of a plain old brass ferule this one has an ad on it for Phillips 66 gas.

This pencil is from WWII.  The text on the left is humorous instructions for an air raid.  i.e. if you are in a bar grab a bottle, if your in a theater grab a blond.  Since rubber and brass were in high demand for the war effort, pencils from this era did not have erasers.  Many pencils of the time instead stamped on something to the effect of: Rubber and brass gone to war, or in this case, Rubber once used as eraser now being used to rub out the Japps.

This is a carpenter Pencil.  Its wade flat design is so it won't roll off of whatever is was set on.  It also has a much thicker lead for writing on ruff surfaces.

Here we have two styles of Bullet pencils.  The on on the top has an all metal body and is the type most preferred by collectors.  The one the bottom has a plastic body and a metal "bullet".  There is a third type not shown that has a plastic "bullet" as well as a plastic body.  As shown, the bullet section can be pulled out and stuck back in the other way to make for a full length pencil.  They are ruffly 5 in. long so they will fit in ones front pocket no problem.

This mechanical pencil from a popcorn manufacture has kernels of corn in the end.  Because mechanicals (sometimes called eversharps) are hard to store or display because of the pocket clips, I only collect the types that have something unusual about them such as this one.  Although, if given one the regular types, I would not turn it down.