I always reuse gift bags for christmas time and other celebrations like birthday parties. I find that if you keep them organized and use new tissue paper that people never notice that they have been used. I try not to use traditional wrapping paper because it can not be reused and creates so much waste every holiday season. I also use creative things like mason jars, brown paper and twine and reusable boxes for gifting. These things add a personal touch as well which I think people appreciate when receiving something from you.