Give your reclaimed boxes and bags a sturdy upgrade with simple wire handles....

https://fun-wiki.win/index.php/The_Easiest_Anchoring_Method_for_Beginners:_Secure_Your_Reclaimed_Packaging_with_Confidence

Give your reclaimed boxes and bags a sturdy upgrade with simple wire handles. Just thread 2-3 mm galvanized wire through 3-3.5 mm holes drilled near the edges. This adds a solid grip that holds up better over time