Stainless steel Tools and misc. quick repair items., prop wrench, electrical wire, multimeter, screws, lubes, spare engine parts, clamps, waterproof sealing tape. spare batteries, blah blah........and of course - DUCT TAPE, all stored in a waterproof Pelican Box. These tools will be useable (not rusted) when needed. As a extra protection I vacuum sealed most items in plastic bags before putting in the box.