I want to take home a cylindrical metal keychain on a lathe, thinking?

I'm in a design technology course and our challenge is to create a cylindrical metal keychain on a C&C lathe.. deeply I need ideas of cylindrical objects that would be cool on a keychain! I'm thinking of conceivably a bullet, any other ideas?
Answers:
1) Lighthouse**
2) Kaleidescope or magnifying lens
(if chalice ends can be added)
3) Spice shaker (salt, pepper, sugar)
4) Pill bottle or coin holder (with a closed end and a cap)


**My husband and I met at a Tool & Die shop. I worked in the department and he worked on a lathe out in the plant. When we started dating and he found out that I collect lighthouses, he actually made me one. It is pretty and I love it! : ) Good luck to you, whatever you choose to make.

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