As an anecdote, I used to get $10 spending money every month for little items like that, but I found I never spent it, so I've had the same $10 in my wallet for months now. I don't have anything that I spend money on any day, especially something I can make for for 10 cents at home instead of paying $1.58.

I keep track of what I haven't spent and occasionally splurge on a cheap bottle of liquor, but that's rare due to the way it impact my hypoglycemia.