I love Anglo Saxon writing. Part of its appeal is that it looks like a foreign language, yet if you read it aloud, much of it is intelligible. And I can spend hours poring over (admittedly in translation) the Anglo Saxon Chronicles. But the thing I think we really ought to revive from Anglo Saxon is the letter thorn. That's not a thorn for putting letters on, but the 27th letter of the alphabet, called thorn.
I was reminded of this when there was a fuss on the news about the Icelandic bank, Kaupthing - because they use a thorn in their logo. It's the shape after the p in the picture. Thorn is a letter that's rendered as 'th'. Just think how often we use 'th' in English because of its thorny Anglo Saxon background. I'd love to bring it back. Þat's þe þing þat I'd like - it's a bit confusing to begin wiþ, but oþerwise fun!