How about those who like closed-ended aircraft spark plug wrenches?

[Wrenchmensch]

BG plugs ignited the AVGAS used by the Spirit of Saint Louis aircraft piloted by Charles Lindbergh in his epic flight across the Atlantic Ocean. This wrench was for BG Hornet spark plugs which were not the ones used in Lindbergh's plane.  But, hey, the Hornet plugs were roughly contemporaneous, weren't they?

[Papaw]

Close enough. Cool old wrench.