Upgrade your reclaimed boxes and bags by adding sturdy wire handles. Use 2-3 mm...

https://www.emergbook.win/give-your-old-boxes-and-bags-a-practical-upgrade-by-adding-sturdy-wire-handles

Upgrade your reclaimed boxes and bags by adding sturdy wire handles. Use 2-3 mm galvanized wire for strength and drill 3-3.5 mm holes for a snug fit. This simple fix makes your storage easier to carry and more durable