They do have the industrial type, the comercial type and thats about it unless you count the self adhesive types. Why not just pick any picture you want, cut it out to size, enclose it in contact paper and stick it on the case.

I know this sounds homebrew but it works. Its not like your gonna sell them so as long as your happy with them

, thats all that matters. That is unless you plan to go pro with them and buy the big heavy duty expensive labelers?