Upgrade your reclaimed boxes and bags with sturdy wire handles for easy...

https://beaussmartwords.rivetgarden.com/posts/my-cardboard-box-buckles-on-stairs-how-do-wire-handles-help

Upgrade your reclaimed boxes and bags with sturdy wire handles for easy carrying and better durability. Use 2-3 mm galvanized wire for strength that won’t rust. Drill 3-3.5 mm holes to fit the wire snugly