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

https://daisydustmaid.com/what-comfort-radius-fits-average-hands-for-a-wire-handle/

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