Have you checked out "Beyond Your Backdoor"? It's a nature store and a new division of Lesser Jewellers.
This magnetic rusty bolt is a very sneaky geocache container. The bolt is hollowed out to hold a log sheet. The magnet is secured in the nut.
When threaded together this looks like a realistic old bolt. The strong magnet will hold it firmly in place and the rubber seal keeps the log sheet dry. Attach this to anything metal and watch those favourite points accumulate Two Rite in the Rain log sheets are included, as well as a micro log roller!
Remember to follow Geocaching.com regulations and respect private property when hiding caches!