Join us in bettering our world.

We are 100% volunteer based so ALL of your gift will go directly toward furthering our mission and supporting stomach cancer research. THANK YOU for your generosity!

one time gift

Contribution Information

Project Periwinkle is a 501(c)(3) non-profit organization and all donations are tax deductible; Tax ID #47-3495943.  If you have any questions regarding contributions, please contact us or check out our financial reporting.

Donate By Mail

If you would like to make a contribution by mail, please complete this form, and mail to Project Periwinkle, P.O. Box 495 Thiensville, Wisconsin 53092


Other Ways to Give

Thrivent Choice

As of June 2017, we are now a participating charitable organization for Thrivent Choice through Thrivent Financial.  If you are a member of Thrivent Financial, you can recommend where some of Thrivent Financial's charitable outreach funds go, and direct your Choice Dollars to Project Periwinkle.  This is a tremendous opportunity to support us and our mission and help to make the world a better place.

Amazon Smile

You can also contribute through Amazon Smile.  Amazon will donate 0.5% of your purchase to Project Periwinkle, when you select us to be your charity of choice.  AmazonSmile is a simple and automatic way for you to support your favorite charitable organization every time you shop, at no cost to you. When you shop at, you’ll find the exact same low prices, vast selection and convenient shopping experience as, with the added bonus that Amazon will donate a portion of the purchase price to your selected charity.  Please consider shopping Amazon through Amazon Smile and select us as your charity.