Magnetic Rusty Nano Bolt geobolt & Utility Electrical Plate Geocache Containers Cache Geocaching Rite in the Rain Waterproof Logs - Etsy
Geostuff.com.au — Flat magnetic geocache container
First large geocache was a COOL one! Required an industrial magnet & had a box of keys for each lock. Took a while but was worth the time! : r/geocaching