Upgrade your reclaimed boxes and bags with sturdy 2-3 mm galvanized wire...

https://www.insert-bookmark.win/upgrade-your-reclaimed-boxes-and-bags-with-simple-wire-handles-for-a-sturdy

Upgrade your reclaimed boxes and bags with sturdy 2-3 mm galvanized wire handles for a cleaner, stronger grip. Drill 3-3.5 mm holes to thread the wire through easily without damaging your containers