After my friend's grandson's tow hook broke on his plastic bike, I designed a new tow hook that's much stronger than the original that came with the bike. It's very easy to print, takes less than an hour to print, and you mount it with 4 screws.
Print settings
Printed on Creality Hi
PLA
0.2mm layer, 2 walls, 25% infill
Print time 54 minutes
Tree supports needed