Squirrel Sisters Nuts

£1.10 (per bag), squirrelsisters.com

The perfect easy-to-carry snack, full of healthy monounsaturated fats and omegas, Squirrel Sisters’ range of nuts include Fiery Chilli Roasted Cashews and Smoked Almonds. Each 25g pack contains 4-5g protein and around 135 calories, with no added sugars.