Probably the easiest way to make a cake for a train party is to create a scene on a cake and put little train cars on top.
This idea works for any type of train, whether Thomas the Train or another maker.
You may also opt to use a train pan.
Either way, here are some great examples to help you decide!
Cakes can be varied! Here are some more cute examples to give you great birthday cake ideas...
They are available in 3-D designs as well as flat, traditional designs that you can decorate.