We were just doing an Easter egg hunt with my son and I was thinking how cool it would be if there were eggs to find in the Tuscany demo. I'm still pretty new to Unity, but maybe I'll give it a shot later today. It should be pretty easy, right? Just create an egg model, assign colors, hide them around the level, and add an action (left click or A button) to pick them up. Maybe even an onscreen counter that can be toggled visible/hidden like the fps info.
Post here if you are going to work on this too.