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

https://fair-wiki.win/index.php/Cotton_Ribbon_Wrap_for_Handles:_What_Width_Feels_Good_in_the_Hand%3F

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