I heard about write jars at the 10-Minute Novelist Facebook page. Vickie S. Miller's blog post What's Your Reward? #Writejar describes how it works. Write jars are similar to swear jars or any other kind of system you create to either fine yourself for a behavior you want to avoid (swearing) or pay yourself for a behavior you want to encourage (writing).
I believe that in the case of write jars, this would be considered an external support for willpower. You're using something outside yourself, a money reward, to help you stay on task. (Timers are also external supports.) I'm not aware of any research on how well monetary support works, and given my crippling Internet problems this week, I'm not going to be able to hunt for any. That will be another blog post. Vickie had only been using a write jar for a couple of weeks at the time of her post, so we won't know for a while how it ends up working for her.
If I were going to try this, I think I would use a simpler system than Vickie is. Keeping track of the different cash amounts for the different types of writing would be unwieldy for me. But like anything else related to managing time, everyone should fine tune systems to suit their own needs.
This Week's Most Interesting Ditched Item
I just tried to upload a picture relating to my October purge, but that's not going to be happening. But it was a Swiss cowbell. I kid you not. We had a Swiss cowbell here. Brought back from the Land of Heidi by in-laws a few decades back. I mention that because I want to make sure everyone knows that I wasn't responsible for bringing it into this country, just into my house. I was able to unload it on my sister-in-law.
Edit: Yes! The new modem has returned us to our normal mediocre Internet access! So I am able to present you with the cowbell that is no longer in my house. I would hate to run into the cow that was able to wear this thing around its neck.