I don’t remember exactly when I got my first one, but I started to use it habitually when my parents gave me one in my 8 th birthday, it has been very important to me since then I have bought so many others. I used to use one every day when I was in high school but now I only use one of this gadgets when I have free time or in the weekend. It usually measures 20 x 13 centimeters but you can find others with other measures. If we talk about history this gadget has been used for a long time and there are a lot of different variety of them and for all the tastes. I like it because it help me to relax end make me feel so many emotions, and for me is exciting when I use it. I can´t imagine my life without it because this has been really important to me and the development of my knowledge.