Personalized Nuclear Eggineer Drawstring Bag. Eggineers are engineering eggheads. Nuclear Eggineer text with an egghead surrounded by a green glow and holding a Geiger counter is a fun gift design for holidays, birthdays and graduation. A durable and versatile cinch bag built to handle daily use. . With its lightweight design and reinforced corners, this pack is perfect for the gym, travel, or everyday activities.