Podcast... have you thought of doing a regular podcast? You could grow your traffic and ask for donations.
E-books: package up your blog as an ebook and spice it up with some premium content. Lulu is a great place to publish and sell it.
Amazon.com: you're doing affiliate stuff, right?
Twitter account: load up with followers and get a Bufferapp account so you can schedule tweets.
SEO (not PPC): Obvious I know, but it's an easy win.
If you spruce up the site / blog with a nice, free Wordpress theme like something here: http://wplift.com/30-free-premium-wordpress-themes-with-cris... you might be able to lure more advertisers. In the meantime, have a space for advertisers on the sidebar or something (but then again, what do I know).
If I have any more ideas I'll post them tomorrow.