This tool is new to me, but not new. Here's how it works:
1. Visit the Etsy Treasury Widget site.
2. Enter your shop name and choose either a treasury that you've made or one that features your work. (This is a cool way to see all the treasuries you've been in. Although I should warn the super-popular people that it only shows the last 100 treasuries!)
3. Pick a size for the display. (The one shown here is "medium.")
4. Choose either static (non-changing) or dynamic. If you choose dynamic, then the list will be updated to reflect changes. It also means that if the treasury is ever deleted, then you will have a blank page! (The one shown here is "static.")
5. Click on the Get Widget button and then copy and paste the code into your blog.
Here's a treasury I made featuring pretty handmade fall beads:
You can click on any of the photos and go right to that page on Etsy.
I love knowing how to do this so easily. I have a feeling there will be a few more treasuries on my blog this fall as I find beautiful things to share! (By the way, I often look at the people in my circle for treasuries, so if you sell on Etsy, add me to your circle so I can return the favor. Thanks!)