I got tired of fumbling around with little magnets, so I sketched a design for something to help me out, sat down with FreeCAD, and stayed up WAY too late last night. I'm sure I spent more hours designing this thing than it will ever save me in my life. Afterwards I searched on printables and saw there are plenty of designs for tools that do the same job, more or less.

But hey, I had fun, and my gizmo does have it's unique selling points.

It works pretty great, but as I'm completely new to 3D modeling and printing, it's no masterpiece. If you want one you may be better off with someone else's design. But if this one in particular blows your hair back, let me know and I'll publish the files somewhere. (Is there a consensus on the "best" site to do that?)