In a week where money is tight, or you need to pay some unexpected bills, try living out of pantry rather than going food shopping. By that, I mean work on running down cupboards and fridge/freezer rather than buying fresh.
This serves two purposes, using up stock before it expires - this is good, if like me, you're not always good at rotating stock in the cupboard, making sure you use the old packets up before you use the most recent ones.
Secondly, it's an adventure! You're limited by what you have, so it's like an episode of ready steady cook. Think outside the box, think of ingredient substitutions you can make to switch up an ingredient in a recipe for something you have. For example, it would be fairly easy to inter change fresh tomatoes/passata/chopped tomatoes/tomatoe purée. It might change the consistsncy slightly, but overall the taste would be similar.
If you have a go, let me know what interesting concoctions you come up with!