The first game of connecting things that you can play with your child, starts with the Animal Sound Game. At teeth brushing time, make an animal sound, like "woof woof", and ask them which animal it is.
Later, at the next level, give your child a word, like sun, and ask them for another word which is connected to it. For example, sky.
After they become comfortable with this, encourage them to give you one which is less obvious. For example, for sun, suggest plant instead of sky, because the plants need the sun to grow.
As your child becomes skilled over many teeth brushing times, then give two words, for example Sun and Plants, and ask for a word that connects them. So, your child may say leaves, perhaps. With this game, your child learns to connect seemingly unconnected concepts.