nexus one case that covers jack / charger?

I recently got my nexus one (and i love it) but I have also gotten the problem of dust underneath the screen. The nice people at HTC said they would replace it, but I don't want to replace it until I find a fix to dust getting in.

Some dude said that the dust gets in via the little charger hole and the ear jack. This finally brings me to my question...

Is there a good case that covers up the hole for the charger as well as the ear jack? Most phone covers I am finding have openings for each, which is exactly what I'm *not* trying to get.

Thanks doods.