Magic the Gathering Energy Counter (4D6)

While building a new EDH deck with an energy-heavy commander (Rex), I decided I wanted a more stable piece to hold my dice. this tray is about the size of a card, fits in the average deck box, and can hold four D6 safely with a clearly visible symbol for the type of counter it is. 

Printed with 5% infill in about an hour and a half. Pretty solid even with the small fill.