We are replacing some classroom EX-Spot TI-84s and want to convert the current classroom yellow calculators into student calculators (students check them out of the LRC). I am looking for ideas of how to mark up/disguise the EZ-Spot calculators so they will be easily identifiable as student use calculators, not classroom only use.
A long time ago, I spray painted covers of black TI-83s so they could be easily identified as school property. Unfortunately, it didn't take long for students to scratch the paint (sometimes w/ bad words, imagine that) so that the calculators looked awful. I'm looking for alternatives. Any ideas?