Set up a page where you display a graph of hosting costs. Next to it, a graph of revenue from your existing affiliates plus donations from readers. Accept donat

Set up a page where you display a graph of hosting costs. Next to it, a graph of revenue from your existing affiliates plus donations from readers. Accept donations. Every time someone donates the graph changes. Put the link in the footer of your emails. I don't know if it will work, though.