You could try painting a Disney character on your suitcase with fabric paint. I have tinker bell on mine, my brothers have bobafett and Jake from Disney Jr. Then my mom has minnie in pink on hers while my dad has a blue mickey. They're super cute and we love taking them with us!
Lamination sheets are probably the best way to go. I use cardstock, put stickers on the paper, then put it in the lamination sheet and trim to fit. Just leave a little gap around the edge of the sheet so it stays adhered to each other.