Here is a list of free or low-syn options available in Dunnes Stores. I'm adding to this all the time. Feel free to let me know of any others you can suggest!

Free Foods

Dunnes High Protein Fromage Frais, Fat Free (per 100g) - Free

Dunnes Fat Free Natural Yogurt (per 100g)

Gullon Sugar Free Maria Biscuits (each) - 1 syn
Gullon Gluten Free Cookies (each)
Gullon Gluten Free Cookies with Chocolate Chips 200g box (each)

Dunnes Irish Pork Sausages, Gluten Free, chilled 8 pack (28g each) - 3½ syns each
Healthline tea biscuits (0.5 syns each)
Hodgins Low Fat Sausages (1 syns per sausage)
Kandee Tomato Ketchup (1syn for 50g)
Kelkin 100cal snack packs micro popcorn (5 syns per pack)
Knorr Chip Shop Curry Sauce (2.5 syns for a sachet)
McCain Rustic Chips 3% fat (1.5 syns per 100g)
Pink n Whites (2.5 syns each)
Heck Zesty Chicken Sausages - 2 sausages 0.5 syns
Heck Chicken Italia Sausages - 1 sausage 0.5 syns
Heck Smoky Paprika Chicken Sausages - 2 sausages 2 syns
Dunnes Mediterranean Cheese Slices 8 pack (20g slice) - 3.5 syns
Dunnes Wholemeal Mediterranean Wraps 5 pack (46g each) - 6 syns
Fitzgeralds Family Bakery Multiseed & Cereal Wraps 6 (1 x 37g) - 6 syns
Dunnes Simply Better, Handmade Sweet Chilli Sauce (1 level tbsp) - 2 syns
Dunnes Curry Sauce Powder, made up as directed (per 100g) - 4.5 syns
Dunnes Irish Pork Sausages, Gluten Free, chilled 8 pack (28g each) - 3.5 syns
Dunnes 0% Fat Yogurt, Strawberry (125g pot) - 0.5 syns
Dunnes 0% Fat Yogurt, Toffee (125g pot) - 0.5 syns