I had one for many years on my boat to hold screws, nuts and washers in. I also used it to test to be sure that what I was using was really stainless steel. I brought it to my house when I moved off the boat, and now use it in my sewing room. When I drop a pin or needle, I use it to 'vacuum' the needle up out of the carpet.
I appreciate the warning about using it around electronic machines.