In one of my previous weekend projects I recommended Tastecard, a great way to save money in restaurants when used with their pretty slick Android app. Tastecard gives 50% off the food bill or 2 for 1 meals at 6,663 restaurants!
The Tastecard has a RRP of £79.99 (although you can usually find it cheaper), however it is currently on offer at only £29.99, £5 of which goes to the 'Mary's Meals' charity.
Mary's Meals is a global movement that sets up school feeding projects in some of the poorest communities, where hunger and poverty prevent children from gaining an education.
Mary's Meals provide one daily meal in a place of learning, to attract chronically poor children into a classroom.
You can sign up at the Tastecard website, use the voucher code 'MARY' to get the discount price (and to ensure your £5 goes to charity).