Kids train set has replaceable parts. i ran out and decided to make them. i have printed with TPU and PLA. they work great. i placed an image of the type of train they go on to help you figure if it would work for you.
Printer Brand:
Creality
Printer:
Ender 5
Rafts:
No
Supports:
Yes
Resolution:
0.16
Infill:
100