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

https://beaussmartwords.rivetgarden.com/posts/my-wire-handle-slips-through-the-hole-how-do-i-anchor-it

Give your reclaimed boxes and bags a sturdy, fresh upgrade by adding wire handles. Use 2-3 mm galvanized wire for strength and rust resistance. Drill 3-3.5 mm holes to thread the wire easily without damaging the material