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

https://wiki-saloon.win/index.php/How_Much_Weight_Can_3_mm_Galvanized_Wire_Actually_Hold%3F

Give your reclaimed boxes and gift bags a sturdy upgrade by adding wire handles. Use 2-3 mm galvanized wire for strength and drill 3-3.5 mm holes for a snug fit