Give your reclaimed boxes and bags a sturdy upgrade by adding wire handles. Use...

https://devinzort649.timeforchangecounselling.com/2-mm-vs-3-mm-wire-for-diy-handles-which-one-bends-easier

Give your reclaimed boxes and bags a sturdy upgrade by adding wire handles. Use 2-3 mm galvanized wire for strength and durability. Drill 3-3.5 mm holes to fit the wire snugly without tearing the material