I'm not sure if this will work, but I'm willing to try...
So I used a dry-erase sentence strip (you can get these at teacher supply stores). I wrote the student's name on the strip with a dry erase marker and then I traced the letters with puff paint to create a raised boundary.
I have used wiki sticks before to outline letters in a similar way, but the students can pull them off. I will post an update when I decide whether or not this works.