husband and I are kinda the same way. We actually did a few years of no gifts (said it was to save for the wedding/college broke-ness but let's be honest, it was pretty low stress)
He has surprised me a couple times (one time when my return gift was socks, I felt like a real winner that year!) but probably not this year. I think my main idea is that I want a new flat iron or boots.....which he wouldn't pick out. And he just wants more socks and a Blackhawk sweater.
Something else we've done that might be easier is going to events rather than getting things. Like we went to a nice steakhouse that my husband wanted to try for his birthday, and we went to a musical for mine. We don't tend to go out and do much of that type of stuff normally, so it's a pretty nice gift!