Right. Well, you can submit stuff! (As long as it can fit in a vending machine and handle the drop.) Just visit the ArtVend submission page and fill out a few questions. Ames C.art will let you know how to package and deliver your items.
From the ArtVend website:
[ArtVend] is a vending machine that has been transformed to display and sell the work of local artists and crafters (aka Makers). The machine will spread homemade morsels of Central Iowa where they might not normally reach, and local Makers will have a unique option to promote their work. The presence of the ArtVend will encourage the integration of creativity into everyday life.
[image via amescart.org]