Add spreadshirt to the shopping page

source/pages/os/shopping.en.html.md

@@ -13,7 +13,14 @@ It's also a great conversation starter with Debianists. :)
 
 ## Available Items
 
-(Nothing yet)
+Our [Spreadshirt shop][ss] offers various accessories and apparel:
+
+[![Accessories](/ui/img/shopping/devuan-bag.jpg)][ss0] [![Hoodie](/ui/img/shopping/devuan-hoodie.jpg)][ss1] [![T-shirt](/ui/img/shopping/devuan-tee-shirt.jpg)][ss2]
+
+[ss]: https://shop.spreadshirt.net/devuan
+[ss0]: https://shop.spreadshirt.net/devuan/accessories
+[ss1]: https://shop.spreadshirt.net/devuan/hoodies+%26+sweatshirts
+[ss2]: https://shop.spreadshirt.net/devuan/t-shirts
 
 ## Request Items