I made a couple of these flutes out of copper pipe as my PVC flutes were constantly needing maintenance.

I would like to put a few symbols on the flutes to tell them apart without just carving a name in them. Got any simple runes or anything that would look cool getting carved?

Also, if someone wants one of these things, I can make it for the cost of the copper pipe and ship for the cost of shipping. I love playing these things.