Here is a messy, but great dinosaurs tuff spot.

What you need:

  • Plastic dinosaurs;
  • Fish tank plastic plants;
  • Rocks and pebbles;
  • Water, flour and food colouring for the goo (or liquid watercolours);
  • Pasta, lentils, semolina for different textures.

To make the goo just mix water, flour and colours to get a pancake batter consistency.