Give your reclaimed boxes and bags a sturdier grip by adding wire handles....

https://edgarscoolchat.talesignal.com/posts/should-i-add-washers-under-wire-handle-loops-and-what-size

Give your reclaimed boxes and bags a sturdier grip by adding wire handles. Using 2-3 mm galvanized wire, you can easily shape durable loops that fit through 3-3.5 mm holes without tearing the material