The most common activity in corporate meetings is making art, drawing small graphics, keeping your neurons busy because doodling is an efficient mean to improve creativity. The problem is never how to get new thoughts into your mind, but how to get old ones out. Art happens everywhere.
The brain turns doodling everytimes we are too bored, because nobody is bored when making something that is beautiful. We shouldn't leap to conclusions about doodles we haven't yet explained because meaningless as a form but meaningful as an aim may be the explanation.
Every image verify existing theories of doodling and could prove useful in encoding information in neuron communications.