I went on what I call a "No Spend Month" last October. I challenged myself not to spend money on crafting for that month. Interestingly my spending wasn't channelled onto other areas, like clothes for example. I think in the end I was more inspired to just not spend, and it felt good. Not because I was saving money, but because I wasn't bring more stuff home to clutter up my space.
October was also WCMD and I participated in no less than 50 challenges here on SCS. I used stamps I might not have otherwised have used, and I finished off using up paper scraps from a couple of different stashes.
I'm looking forward and planning my next NSM for February.