An alternative to making custom wrappers for candy bars is to use a gift box instead. The bonus is that you can hide a gift card, movie tickets, or other special items inside along with the candy bar.
You can also add optional finishes to the box such as cutting the bottom edge of the cover flap with decorative scissors, or
add a slight oval curve to the bottom.
You can glue the cover flap closed, but a ribbon or round sticker would provide a nicer touch.