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

https://www.stall-bookmarks.win/upgrade-your-reclaimed-boxes-and-gift-bags-by-adding-sturdy-wire-handles-use

Give your reclaimed boxes and bags a serious upgrade by adding sturdy wire handles. I use 2-3 mm galvanized wire—it’s strong and resists rust. Drill clean 3-3.5 mm holes to thread the wire easily without damaging the material