If you have a website, please consider adding a message and link to the Red Cross donation website or the link to the donation page of any other website.
To get it up ASAP, I've used the HelloBar (http://www.hellobar.com) on my site. You can see a working version of it at http://www.webdesigncompany.net but really any way that grabs attention would be a good way.
PS: I'm not associated with the HelloBar product but I've sent them an email requesting that they allow those who want to use their product to participate to get an invite to their beta. Hopefully they'll reply here soon.
If you don't want to setup an account or don't have an invite yet, you could copy/paste the following code:
<script type="text/javascript" src="//www.hellobar.com/hellobar.js"></script>
<script type="text/javascript">
new HelloBar(3823,9104);
</script>
The text and link will never change.