Self-adhesive paper is a useful tool for both professional photographers and amateurs. Often used as "quick-proof" to see what a sticker will more or less look like. 

Unlike foil, paper tears easily, which can often be its plus - self-adhesive paper with strong glue will definitely work as a seal on the product! It can be printed digitally, thanks to which the graphics on it will certainly be of better quality than on all films used for large-format printing.