DH Birthday Gift Ideas

I need an idea for a birthday gift for DH.
Please don't recommend anything too extravagant. In the past I've gotten him a camera and a watch.

We just bought a house, had a wedding, and planned a vacation....so I'm not rich right now. I'm thinking the $50 range.

Any ideas?

what are some of his interests?

maybe a playstation game (if he's into that).... a few DVDs.... I-tunes gift certificate..... a banana republic sweater....