If you click on the "Shop" link at the menu bar you may notice a new menu option there now, the "Datalk Gadgets Shop"
You can buy and display images like the ones you can see under my avatar pic here.
Many more images/gadges will be added soon.
Please post in the Questions/Suggestions forum if you have any suggestions to other images we should have in there:
http://www.datalk.com/questions-suggestions-feedback-f31.html