When I read this post, I thought to myself, hey I want to put mine on my blogger too! Here's an example of mine:
http://dreameryphotography.blogspot.comOn Etsy: Go to Your Account, scroll down to Etsy Mini, Then do 1, 2, and 3. Then go to the box where it says "Copy this code for the JavaScript version (for use on personal websites and blogs)" and copy the JavaScript in the box underneath those words.
On Blogger: Go to the Design tab, then Page Elements. When viewing your sidebar elements you should see the words "Add a Gadget". Click it and a pop-up shows. Scroll down until to you see "HTML/JavaScript". Click the "+" next to it and another pop-up will show. Paste your JavaScript from your Esty Mini in the "Content" box and Voila! Don't forget to add a title. Hope that helps! :)