I saw these a few years back and thought they were so great! You can buy them premade for a certain theme or make your own with ziploc bags, scrapbook paper, shipping, labels, and stickers, stamps or whatever you want to use to decorate them. Fill them with small gifts, candy, treats, etc.
Seal the bag and fold either a precut cardboard piece or use a handmade from scrapbook paper. Affix with two staples, one on each side. If handmade, shipping labels are a perfect size to personalize them and can de decorated with stickers, stamps, preprinted on the computer, whatever you like!