You know what a workout schlepping a heavy bag around an airport can be, so bring that same hard work home. Replace a bulky barbell with a sturdy duffel bag filled to your comfort level, and use it for biceps curls.
Stand with your feet close together. Hold the duffel bag in front of you with both hands, with your arms extended toward the floor and your palms facing up and away from you.
Lift your hands upward toward your chest, holding your elbows stationary at the sides of your abdomen. Avoid leaning back as you lift the duffel bag. Lower your hands back down and repeat as necessary. You can also do this exercise holding the duffel bag handles with one hand and curling the bag with one arm.