Since I know that #sustainability is important to you (I'm still bummed I missed your #CMWorld presentation/walk), the @dshiao article on sustainable #packaging tips might be useful - or at least interesting.
Lastly, here's some #packaging eye candy provided by @PremierPress that might generate some ideas. Applications include #influencermarketing, product launch seeding kits, sales kits, college commencement, and welcome kits, and #virtualevents.