Personalize Your Tools with a Custom personalized Etching
As requested in this post, This is how I etch my knife blades, but you can etch pretty much anything using this method.
You should be able to find everything around your home, the only other thing you need is access to a laser printer.
It would take a long time to get a thick piece of metal like a hammer up to a temp where the toner will stick though.
Practice on scrap before you try and etch your best tools. Anyhow enjoy....
http://www.youtube.com/watch?v=kROUeOtuXmE