Melt your butter and add marshmallows over low-medium heat. When melted, carefully stir in the noodles (so they don't break), kinda just fold in with a spatula. Let them cool, but not completely.

Then take some cooking spray and coat your fingers.

Next, take a handful of mixture and mold into a nest shape on set on wax paper

Let the nests cool completely.

Add Peeps chicks and eggs to the nest.