A lovely pet X Ray  themed mini sensory trays 
This includes a dog, two cats, a fish and a rabbit
 
Lovely 6mm Hollow Shapes with solid 3mm Bases (You will need to glue the shapes to the bases if you want them as one piece but to use them as hollow x rays over a lightbox, we recommend leaving them unglued so you can use just the hollow parts 
The shapes vary, but as a guide, they are approx 12-13cm