I've been using geomag magnets in a current raspberry pi project, and incidentally found they're perfect for keeping small (metal, obviously) tools to hand in the workshop. I keep several of these magnets on my work lamp, with my most-used tiny tools stuck to them for easy access. More a lifehack than an instructable, but this has revolutionised my workbench!
Step 1: Get Some Geomag
I'm using the bare magnets themselves in a current project to semi-permanently secure flying leads to the innards of a mini flexible keyboard, to allow external buttons to mimic keypresses - a variation on this instructable - but have found it even more useful to keep small tools such as drill bits exactly where I need them.
Step 2: Tool Up
I have the geomag stuck to my anglepoise lampshade holding the tools I use most frequently so I don't have to dig into parts boxes and drawers every time I need them, but any convenient metal surface would work equally well. I find myself using push pins, a rotary tool and tiny screwdrivers a lot at the moment, and these small bits are easy to misplace in the general workbench chaos otherwise.
I was already using a magnetic kitchen knife rack, which is great for the bigger tools!
Step 3: And Fridge Magnets
Did I mention the magnets are really strong?
You can also make quick & easy customised fridge magnets by simply clipping a geomag stick onto your fridge and adding a bottlecap of your choice - or something more useful like a cake testing skewer. They're also strong enough to securely hold quite a few sheets of paper (recipes, kids' party invitations etc), which is very handy if your family's fridge looks anything like ours!