So here's the deal, my sister-in-law who I love very much recently went to Paris and fell in love with macrons. Today, I tried a bakery in Cary, NC which has excellent macrons and with her birthday being later this month I want to send her a batch. Is there a good way to package these things so they'll arrive all in one piece? I'm definitely going to spring for overnight but I've never mailed cookies before. Any help would be appreciated!