If you have a printer and a scanner, you can make free custom fonts (of, say, your own handwriting?).
You could, potentially, type up a hand-written letter. Wrap your mind around that one!
Thanks to the wonderful, free (as of September 1st, 2011) website, MyScriptFont.com, it's really quick and easy.
Just open and print the template.
Use a black felt-tipped pen (not a Sharpie, it makes it far too bold), scan the document using grayscale and 300 dpi, upload it to MyScriptFont.com, download the TrueType Font, click "install," and in just a few minutes you're typing in your own handwriting.
I broke the rules. I didn't use a felt-tipped pen, so my font doesn't look so great; it's kinda scratchy. But rest assured, armed with a PaperMate, I shall overcome.
Oh, and if for some bizarre reason you want to download a font of my chicken-scratch, be my guest.