Once Olivia lets Viola see her face, Viola chides her that she would be the cruelest woman alive if she went to the grave while leaving no copies of such beauty (i.e. kids) to the world. Olivia jokingly retorts that she'll leave an inventory of it in her will.
Olivia: As item, two lips, indifferent red; item, two grey eyes, with lids to them; item, one neck, one chin, and so forth.
One civic theatre production even made a funny bit out of "My brother he is in Elysium.": During the Viola/Captain scene, there were signs pointing left to "Shore," right to "Illyria"... and up to "Elysium."