1: [Nursery]
Monster eggs must incubate. Their quirky chemistry means that some will hatch quickly while others need a long time. The Nursery can accommodate only a single egg, but it will receive the tenderest of pampering, thanks to a soft bedding of hay and just the right amount of warmth from the lamp.
2: [Nursery of the beyond]
If it looks like a Nursery... and smells like a Nursery... and tastes like a Nursery (blech)... it must be Nursery! In the variable temperatures of the Beyond, a heatlamp can provide the much-needed warmth to make sure that eggs incubate properly.