I'm in a similar position myself, as I have 1 lens left to buy and that's the DA12-24 and my collection shall be complete--in other words, I won't have any more lenses that I will "need" to buy. Anything else I buy beyond that will be icing on the cake.
With that, thoughts of a wide prime and the *50-135 or 70-200/2.8 still float around in my head, but they can wait.
After I buy the 12-24, then my next goal is to save up for a photo workshop that I want to go to next spring, which will run me about $555 + gas for the car to get there and back.
Beyond that, I'll be looking towards getting a second body--which body will depend on what Pentax produces at Photokina. I haven't decided yet whether I'm going to get a K20 with the K10 as a backup or get a K100D Super as the backup to the K10.
A smaller-priced item that I would like to add to my bag is a meter--most likely the Sekonic L358.
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