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Combining a recent derivation of the CMB evolution equations for homogeneousbut anisotropic (Bianchi) cosmologies with an account of the full linearizeddynamical freedoms available in such models, I calculate and discuss thevarious temperature and polarisation anisotropy patterns which may be formed.Certain anisotropies can be hidden in superhorizon modes at early times, thusavoiding any constraints from nucleosynthesis while nevertheless producingnon-trivial redshift-zero temperature patterns in flat and open universes. Theresults are likely to be more of pedagogical than observational interest, butfuture work will assess whether such patterns can be matched to anomalies inWMAP results.

Rogues' gallery: the full freedom of the Bianchi CMB anomalies