4) 'Left Over' Money
This one applies if you already have a budget, out of which, you set yourself a weekly spending limit. As I mentioned previously, I give myself a fortnightly allocation (in cash) for the areas of groceries, petrol and spending money (which is my little splurge fund - which I use for things like shopping, eating out, nails, homewares, etc).
At the end of the week (or fortnight/month - however you budget), any money that you have left over from your spending money gets popped into the cash stash. Even if it is just $2, make sure that you move it over! I also put away any extra money that left in my groceries/petrol fund - sometimes there is lots, other times there is none! But just by knowing that ALL left-over money goes into your Cash Stash, it helps me to be more budget conscious when I am shopping, because I know that any thing that I don't spend will go straight into my Cash Stash and put me one step closer to achieving that short-term goal!