I like Peeps, too.  Barry, the key issue is whether there is religious discrimination going on when it comes to the issue of the Easter Peeps.

If the landlord is simply enforcing in an evenhanded manner a religion-neutral lease provision regarding cleanliness, there’s probably not much of a case. On the other hand, however, if the landlord has a policy or practice that treats religious expression on less favorable terms than non-religious expression, there is likely a violation of the federal fair housing laws (and also the First Amendment if the landlord is a state actor).