Blogoversary Button

This is the first Blogoversary button I've come across and you can easily get it for your own blog at blogoversary.com. All you need to do is input your "born date" (or date of your first post) and it will calculate the code for your personalized button. Then add it as a new page element (html) in your blogger sidebar.

If you type in your blog name and blog address, they'll also showcase your blog on their site when it has its blogoversary, but the address is optional, so don't include it if you want to keep your blog amongst family and friends only.