per subject. I am wondering if pewter would be workable.
You may be able to etch but I am fairly sure you wouldn’t be able to cut it no matter how thin it is.
No expert on pewter but I don’t think you will be able to do anything useful directly to the pewter item but you can however laser engrave some molda and make your own pewter object! http://m.instructables.com/id/Pewter-Cast-Coins-From-Laser-Cut-Molds/