That could definitely be a very helpful and productive redirect. But I find that when you get to the point that op is at, you've hit a low where all you want is satisfaction for the least amount of energy... and purchasing and getting stuff is, for whatever reason, a cause for an increase in dopamine in our brains. And clicking a button is so little effort... I suppose I shouldn't assume op has a mental illness, but I do know how it is to feel connected to life and the possibility of joy by the thinnest of margins.
www.psychologytoday.com/blog/brain-wise/201510/shopping-dopamine-and-anticipation
Ebay has tons of stuff under a dollar. My kid gets her allowance and always buys atleats 5 dollars worth of tiny things. She just got a gold fidget spinner for a dollar. I once got a purse for a dollar a really nice one 2 years ago. I still use it.
www.psychologytoday.com/blog/brain-wise/201510/shopping-dopamine-and-anticipation