First of all, I've to say that in our country airlines doesn't decorate their planes. I agree with Eva when she says that our planes are so serious. The planes only have the company logo and the particular name of the plane. It would be more sympathetic if the planes were decorated and it could also help passengers who are afraid of flying.
In second term, I would like to describe a drawing I've done to describe a trip I made around Switzerland a few years ago. This time not by plane, but by car.
There are eight circles in the drawing that represent the cities or towns where I lodged. The size of the circles gives an idea of how small or big is every city/town. Around this circles there are short curved lines that represent the number of nights I spent there. The circles are connected by little arrows that represent the way I moved through from one town to another. Sometimes, there is an arrow that leads to another circle not connected with the rest. These other circles represent other towns I visited during the trip, but where I didn't spent nay night.