So, you want Shelf Life merchandise.
The best ways to support Shelf Life are those described on the support page, but if you would like to purchase merch—well, there's merch.
The merch store exists to make items available and not to make money, so the prices have been set as low as possible while preserving price parity between items "for women" and items that are unisex or "for men."
If there's something Shelf Life-related that you want that's not in the merch store, let me know. I can make it happen. New merchandise will roll out periodically, and when it does I'll alert you in the newsletter.
Any profits generated by the Shelf Life merch store will go toward the purchase of Shelf Life promotional materials, to defray the cost of maintaining this site, and to Ferst Readers.