My pannier choices seem to be "none" or "pannier big enough to fit a cow inside".

I can currently carry everything I need in a messenger bag, but I'm going to be doing a 23-mile-each-way commute, and I want to move that stuff off of my back.

I want to carry:
Macbook Air
Few computer accessories ( power cord, digital camera )
U-lock
T-shirt
Pair of jeans

And really that's about it. I want little tiny streamlined panniers, not one gigantic one the size of a mountaineering pack.

I'd just get something like the Arkel Tail Rider, but it (along with all the other similar bags) seems to only be about 6" wide, which isn't as wide as my laptop.

Anyone know any minimalist panniers? Or know anyone who can custom make panniers to my specs? That would be cool.