Try plotter/cutter vinyl. It's contact paper like, but it isn't nearly as fragile and doesn't bubble and stretch. It's normally used for sign printing but you can find it on the net in loose rolls if you search for it. I'm about to get some syself. The best part is that it's a printable surface. it won't fit in a normal printer as is, but if you cut a few inches off of the roll you can stick it in your printer and print on it. Get a role of white and you can make decals for your cp and cab rady to cut out and stick on. I haven't used it for this application yet, but I've checked it out and it should do well.