I remixed this from https://www.thingiverse.com/thing:3075061 I resized and did a little cropping. The new hole fits over a 20mm lashing strap perfectly. There's just enough to room to allow it to move, but not enough that will slide accidentally.

I printed my test models using PolyLite PLA at 20% fill. It lifted a bucket with 30 pounds of weight and held it overnight. I wouldn't recommend holding 30 pounds with this little hook, but it probably can.