This is the larva of a Mealworm beetle, the larvae themselves being the mealworms. Almost certainly the species Tenebrio molitor. When found in homes they are usually associated with bread that birds have dropped down chimneys or in abandoned birds nests. No eggs will be laid as it is a larva. Ensuing adults, females at least, will lay eggs on a suitable food resource. Look out for more - and feed to the Robin in the garden, every garden has one.