Portal 2 Companion Cube Tin Lunch Box Every Portal gamer should have a Portal lunch box. Take home this fine Portal 2 Companion Cube Tin Lunch Box! It's based on the Portal video game series. Carry Aperture Science with you! The perfect lunch cube! Every Portal gamer should have at least one Portal lunch box. That's the rule! For example, take this fine Portal 2 Companion Cube Tin Lunch Box. It's an excellent lunch box based on the Portal video game series by Valve that features a Companion Cube design. It's perfect! Even Aperture Science thinks so. Measures 8-inches on a side.