[jonnybear]

I hate throwing things away, already used one of these as trimmer tool for a brass radio trimmer slug, today I found a couple of used refills in recycling my wife had thrown out, ever the Scrooge I thought they would make a nice tactile probe, using a cable clip masonry nail and a bit of rubber tubing, I set to work
First remove the ball and holder, clean out any old ink left with hot water, then force fit pointed end of nail, then grind head to a point, slide on rubber pipe and you have a useful tool.
John