Just please be sure you wash that egg carton thoroughly (if it's plastic). It's not recommended to reuse egg cartons for food use:
Quote:
Is it safe to reuse egg cartons?
Eggs are washed and sanitized before being packed in clean, brand new egg cartons, eliminating bacteria that may have been present on the egg shell. While the cartons and eggs are clean after they are processed, there is still the potential for the eggs and carton to become contaminated via cross-contamination, either at the store, during handling, and/or storage in the refrigerator at home. The Egg Safety Center would recommend discarding egg cartons in the trash and not reusing them.
From here:
http://www.eggsafety.org/consumers/c...faqs#PURCHASE4