Resource Klaxon: Packaging Nets
/Templatemaker is a really useful site I happened across whilst researching custom packaging for the recently published Words of Wisdom.
On it are a huge range of templates, from basic stuff like a matchbox, mail box, through to more complex items like spheres and a variety of polyhedra. If free vector nets aren’t enough, the really nice part is that you can input your specific dimensions and it will generate the net bespoke for your needs.
As ever, this kind of resource does not replace an idea. But if you do have an idea, then the template to produce it is more than likely available here.
As a final point the site is run and maintained by one good person in the Netherlands, so acknowledge any help you get and contribute where possible.