odf,

Re using magnets to deform the eyelids to fit the cornea.

Quote - Err, when I said parented to the eyeball, I meant wired up to follow the movements of the eyeball. It would need to influence the head actor (and only the head actor), though, so it'd probably have to be parented to that.

I think it would work best with the Base and Zone parented to the eyeball (the Mag is parented to the Base by default). The actor or actors to be influenced by the magnet are specified by "deformTarget" lines in the Mag. This  should to edited in a text editor to exclude the eyeball itself from the influence of the magnet.