We made ours in groups of 3 and built them upon waxed paper.
1/4 cup chocolate chips
1/4 cup butterscotch chips
1 cup chow mein noodles
3 chocolate robin's eggs
Melt the chocolate and butterscotch chips for about a minute in the microwave. Stir up well. Stir in chow mein noodles. Divide into 3 nest sized bundles on wax paper. Wait just a minute for the mixture to cool and then form into nests. Add 3 robin's eggs. Eat! You can also wait for it to cool a little before eating - it gets a little firmer and more nest-like.
Want to make a bigger batch? Just use equal parts chocolate and butterscotch chips and slowly add chow mein noodles until the mixture looks right to you. You'll know it when you get there - you don't want it too gloopy.