I've been having a lot of trouble with the trolley. I've tried to make the poles cylindrical but I then had issues merging them together and keeping their form. I restarted it with cubes instead and without realising I must have spinned some polygons because when I reopened the file there was polygons everywhere (I wish I had taken a screenshot). Because it would have taken too long to try and fix it, I restarted again and this time finally got it working.
I've textured the models. For now they're just simple texturing with a Glossy BSDF. I'm hoping to render them out with a toon shader and outline.