Ohajiki is basically a plaything for little girls. In the past, they used roll shells and pebbles, but now they use variously colored ceramic, glass or plastic ohajiki. These are scattered on the floor, and, after dividing them by finger, the ones you aim at and hit are yours. The person who takes the most wins. The name ohajiki came from playing by snapping or flicking(hajiku) with the fingers.
Otedama is a small bag made of cloth and filled with small beans, pebbles, rice and the like, used in a game for young girls. It comes as a set of either five, seven, or nine beanbags, one of which, larger and conspicuously colored different from the others, is the chief bag(oyadama). One plays by tossing up a bag, then singing and manipulating one or more bags on the ground in a certain way while the tossed bag is in midair, or by juggling them.
Kendama is a wooden toy consisting of a wooden stick with one end sharpened, the other end shaped like a dish, and a ball with a hole in it connected to the stick by string. The object is to balance the ball on the dish part and to stick it on the sharp end of the stick. There is a similar game in Europe, as well, but there are even kendama championships held in Japan. Since the Taisho Period(1912-1926) the shaft has been cross-shaped and has three dish parts in total.
These are outdoor games for children. In onigokko, the person who is it(oni[meaning demon or ogre]) is decided by the game of scissors-paper-stone(janken), and when the one who is it chases and catches another person, the person caught becomes it next. In kakurenbo the one who is it is also decided by janken, and, while that person counts with eyes closed, the others all go and hide. When finish counting, the one who is it starts looking for the children who are hiding. Both are very popular games for Japanese children.
Game of scissors-paper-stone is played to decide things like order of participation or victory or defeat in trifling games. While saying "jankenpon," players put one hand forward in a fist--stone(gu)--or with two fingers protruding--scissors(choki)--or with all fingers completely open--paper(pa). Victory is determined with stone breaking scissors, scissors cutting paper, or paper covering stone. When everybody puts forward the same shape, or when all the three kinds of shape is put forward, they keep on playing, saying "it's a tie"(aiko-desho) until the winner is decided.