I just tried some clear and some white vinyl with an adhesive back that I really like, mine was made by Papillo and I got it on Amazon. I like it better than water slide paper because it is easier to position I think. It is a little thicker but I have not had any problems getting ca over it. I needed something white so I could print a firetruck on it and get it to show up on a red blank for a kids christmas present. I just made another bolt action pen with a mule deer blank and I put a name on it with the clear and it really worked well.
Hope this helps.