From Mark Vandiepenbos:

Every year we make a costume for our daughter. Being a maker, we assemble and build from recycled parts and materials. This year I had the idea of making a toddler on a tricycle pulling our daughter around. Initial concept was to make everything foot controlled to give the illusion of the toddler peddling and steering.

[Source: Mark Vandiepenbos on Youtube | Via FG]