Spider Eggs

Spider Eggs are, as the name says, the eggs of Giant Spiders.

In Ultima Underworld II the mage Altara in Killorn Keep was planning to create Altara's Scepter for the Avatar, but still needed two more ingreadients, one of them being the black eggshells of the dread spider. The Avatar found these in the fourth level of Britannia and brought them to Altara together with the amathyst rod from Talorus in order to get the scepter.

With the Keyring Mod for Ultima VII, these two of these eggs are needed in order to create a Gem of Dispelling. They could be found in a spider nest sounth of where the Lost River empties into the sea.