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

https://evelynsexpertthoughtss.nexorafield.com/posts/what-gloves-stop-wire-burrs-but-still-let-me-work-with-small-parts

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