So, I have thought about this over the past day or so, and the rules for my decreased spend month are, essentially, quite straightforward.
I will only buy food that is absolutely necessary, using up what is in my cupboard first, and I will refrain from buying any new clothes, make-up and toiletries, unless I absolutely need to.
This is not about utter deprivation, but it is about spending more mindfully.
For that reason, I will not spend on new material goods, other than essentials, but I will use money (as wisely as possible) on travel and experiences that simply enrich my life.
Experiences over materials. That is basically it.
Sometimes simple is best. 🙂