What to buy for hubby for first year anniversary?

I'm clueless. Was thinking of a sci fi book? He liked the Terry Goodkind series... It's been a long, hellish first year of marriage and I'm not exactly feeling thoughtful at the moment. We're going out to dinner where we got married and I think he bought me something extravagant, so I don't want my gift to look lame! Haha thanks.