That is the reason that many accountants are CPA's. Not all accountants are CPA's, as you have noticed. The next time you are at your CPA's office, be understanding. Please do not mention contact paper, the words covering, sticking, and most importantly, do not mention shelf liners. If you can use contact paper in moderation, then here are a few ideas for you.
Bookmarks are fun to make with contact paper.
Everyone needs a wipe-off board. You can make one easily by putting multiple basecoats of acrylic paint in your favorite light color on cardboard or other smooth lightweight materials. Paint the margins with bright fun colors in whatever design you prefer and when it dries. Cover it with clear contact paper. Note cards are fun to make with clear contact paper.