Provinces hosting the National Convention are allowed to participate in fund raising activities to help defer the costs of the Convention.
Chapters often have ongoing fund raising projects to aid their individual chapters, the profit going to various charitable organizations.  
A few that we know about are below.
Live, Laugh, Love T-Shirts - Oklahoma Kappa - November 2013
Create Your Own Note Cards - Kansas Beta - July 2014
DTC National Manual - Missouri Delta - July 2015
DTC National Recipe Books are temporarily sold out!!! (October 2015)
Please contact National Vice President,
Teresa Carter if you wish to place an order
DTC Tote Bags - California Omicron - February 2017
Fund Raising Projects