I was just able to add a widget for an Amazon Wish List to my library news blog.
In order to do it, of course you have have an Amazon account which can be made public. Since I have two separate accounts, one personal and one for school, I was able to designate which one I wanted made public.
Once you've gone through the steps there is a place on the Wish List page which allows you to share your wish list in various ways. I chose to use a widget since I'm still not set up to email all my parents, students, etc. (I'll do that eventually as well).
I put the widget on the news blog because that made the most sense to me and I don't really have room for it on my main page at this point. However, I was able to put a button on the page which links to the wish list. I also found the code for the button on the Amazon's Wish List page.
I also posted an article in the parent newsletter recently (you can find it on the news blog as well) which explains several ways parents (anyone viewing at the website) can contribute to the library. It includes buying through Amazon Associates account, a new product called GiftLit, and a link to our local independent bookstore.
Check it out. You may find it useful.