@dlaituriposted about engraving metals and it reminded me that I wanted to try titanium. I bought a bunch of Titanium odds and ends and tried a few today. They worked a treat.
I grabbed a picture of the Gerber Shard engraved with our logo - it’s pretty cool looking in person. I also tried a few titanium sporks (that’s a thing, apparently) in different colors and they looked great as well.
I would guess that it might lightly mark or texture the titanium, but you really are going to want to work with an anodized product to have it stand out like this.
Of course those are a thing - I carry one in my luggage on all trips. Never know when I might want to hit the hotel store and get a pint of Ben & Jerry’s I’m going to engrave my name on mine now that you’ve mentioned this!
Mine was a Christmas present several years back. I think it came from Thinkgeek, but they are out of stock.
Here is the Amazon Link, and they have fun colors!