Make your printed surface double. It is possible with a Twinlabel printed by Eurotickets.
It is a particular kind of adhesive label, on which a second paper or plastic layer is applied: the special adhesive between the two layers is easy to open and close, in order to make your space double.
Moreover, it is also possible to print on the adhesive side, having three printed pages instead of two and making even more space for your communication.
There are a lot of possibility for twinlabels: the reclosable special adhesive part can occupy the whole surface of the label or even just a part. The front page can be completely removable from the base and can be used as a coupon. The first page can also have an easy opening part.