Personalized Nano Eggineer Drawstring Bag. Eggineers are engineering eggheads and this humorous egghead with a magnifying glass and nano eggineer text will tickle the funny bone of your engineer at birthdays, holidays 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.