Can be any size magnet ranging from 2.36" diameter to 4.72" diameter.
Double braided rope preferred, at least 65 feet in length and a carabiner to attach to your belt buckle.
You will need to keep your hands dry but also prevent your hands from getting cut by metal objects.
You will need to have something to put your finds in.
You will need a plastic scraper to help remove small metal objects and clean off the magnet in general.
In the scenario where you get your magnet snagged, you will need a way to get it back.