What can you make with Dried Lemon Grass?
Personally I don't find dried lemon grass that flavorsome and much prefer fresh (usually you can get several big sticks for cheap in the Chinese / Asian supermarkets).

But I'd probably try Thai based dishes - many of their noodle soups (e.g. Tom Yum, chicken noodle soup) will have slices of fresh lemon grass in.  I'd try adding the dry stuff when you are making the stock and see how it works out.

You could also try stir fries and looking around there are several drinks prepared with it (e.g. Lemongrass vodka (at the bottom of the page) and cooling drinks here).  Though I suspect again fresh would be better